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Fish Stocks Are Declining Worldwide, And Climate Change Is On The Hook

December 14, 2015, NPR.org, Claire Leschin-Hoar

A fisherman shovels grey sole, a type of flounder, out of the hold of a ship at the Portland Fish Pier in Maine, September 2015. New research finds the ability of fish populations to reproduce and replenish themselves is declining across the globe. The worst news comes from the North Atlantic, where most species are declining.For anyone paying attention, it’s no secret there’s a lot of weird stuff going on in the oceans right now. We’ve got a monster El Nino looming in the Pacific. Ocean acidification is prompting hand wringing among oyster lovers. Migrating fish populations have caused tensions between countries over fishing rights. And fishermen say they’re seeing unusual patterns in fish stocks they haven’t seen before.

Researchers now have more grim news to add to the mix. An analysis published Monday in the Proceedings of the National Academy of Sciences finds that the ability of fish populations to reproduce and replenish themselves is declining across the globe.

“This, as far as we know, is the first global-scale study that documents the actual productivity of fish stocks is in decline,” says lead author Gregory L. Britten, a doctoral student at the University of California, Irvine.

Britten and some fellow researchers looked at data from a global database of 262 commercial fish stocks in dozens of large marine ecosystems across the globe. They say they’ve identified a pattern of decline in juvenile fish (young fish that have not yet reached reproductive age) that is closely tied to a decline in the amount of phytoplankton, or microalgae, in the water.

“We think it is a lack of food availability for these small fish,” says Britten. “When fish are young, their primary food is phytoplankton and microscopic animals. If they don’t find food in a matter of days, they can die.”

The worst news comes from the North Atlantic, where the vast majority of species, including Atlantic cod, European and American plaice, and sole are declining. In this case, Britten says historically heavy fishing may also play a role. Large fish, able to produce the biggest, most robust eggs, are harvested from the water. At the same time, documented declines of phytoplankton made it much more difficult for those fish stocks to bounce back when they did reproduce, despite aggressive fishery management efforts, says Britten.

When the researchers looked at plankton and fish reproduction declines in individual ecosystems, the results varied. In the North Pacific — for example, the Gulf of Alaska — there were no significant declines. But in other regions of the world, like Australia and South America, it was clear that the lack of phytoplankton was the strongest driver in diminishing fish populations.

“When you averaged globally, there was a decline,” says Britten. “Decline in phytoplankton was a factor in all species. It was a consistent variable.”

And it’s directly linked to climate change: Change in ocean temperature affects the phytoplankton population, which is impacting fish stocks, he says.

Read more here

Know the Carbon Pollution Toolkit – Webinar Archive

Which carbon pricing approaches deliver deep, sustained cuts in emissions?

A webinar sponsored by Global Ocean Health, Washington Business for Climate Action, and Climate Solutions:  November 16th, 2015.

By Brad Warren, Julia Sanders (GOH) and Lisa McCrummen (WBCA)

Dozens of policies to cut carbon pollution are in force over the world, and it’s now possible to see clearly how well they work. Some policies deliver deep, rapid, and sustained reductions while also boosting economic growth. Some don’t. They are not equal.

 Voters in Washington state will have a chance to enact strong carbon emissions policy in 2016, but only if they choose wisely from the toolkit. Similar initiatives are likely across the world, both nationally and subnationally. Anyone that cares about achieving significant carbon emissions reductions needs to understand the tools that make up good policy. Here’s your chance to develop your knowledge. In Washington, two competing initiatives are proposed.  The differences matter. The future of fisheries, farm crops, water supplies, forests and communities depend on choosing tools that work.

This webinar archive features a performance analysis on carbon policies around the world, prepared by Global Ocean Health, and a detailed report on one of the most effective systems, the nine-state RGGI system on the US east Coast, from the Acadia Center.

Carbon pollution toolkit powerpoint presentation

Please feel free to leave questions or comments!

Let’s Look at Past Successes to Encourage the Vision of a Brighter Environmental Future

Too often the tone of environmental discourse —Crisis! Dire failure!—promotes hopelessness and paralysis. Brock Bernstein, President of the National Fisheries Conservation Center (Global Ocean Health is a program of NFCC), takes a different view. He was recently asked to write a blog entry for the journal Integrated Environmental Assessment and Management, and we think it’s an important message.

By Dr. Brock B. Bernstein

Pervasive doom and gloom dominates much of the popular news about the environment. Global warming, sea level rise, ocean acidification, drought, wildfires, overfishing, or overpopulation—it all contributes to a feeling of despair and hopelessness, particularly among young people. This struck home for me on a personal level during a recent conversation with my college-aged son and a few of his friends—they felt they were “totally screwed” because of the inevitable impacts of climate change.

Cuyahoga River fire, 1952. Courtesy clevelandmemory.org

One value of getting older is that you’ve seen more and have a longer history to draw on. I grew up in southern California from the 1950s through the 1970s when environmental problems were severe and visible – air pollution (I remember frequent episodes of eye-burning smog that caused incessant coughing fits during water polo practice) and sewage contamination that led much of Santa Monica Bay’s beaches to be permanently closed to swimming (1,2). While I was in graduate school, I visited a colleague in Cleveland in the late 1960s, just a couple of years after the Cuyahoga River caught on fire again, because it was so polluted that, as Time Magazine put it, the river “oozes rather than flows” (Time, August 1, 1969).

Los Angeles smog

Smog over Los Angeles basin. Credit: Al Pavangkanan, CC BY 2.0.

And yet, we’ve solved many of these and other problems that seemed so overwhelming at the time, and we’ve made major progress on newer ones such as the ozone hole. One useful thing about getting older is that it provides some protection against the shifting baseline phenomenon in which our perceptions are dominated by more recent information while the past recedes in our collective memory and is not part of our current awareness. For good reason, environmental advocates typically focus on shifting baselines that cause us to see current, degraded conditions as normal. For example, the average size of top-of-the-food chain fish, such as swordfish, has declined substantially since the 1800s (3), to the extent that most people cannot even imagine a 400-pound swordfish. Yet shifting baselines also diminish our awareness of past successes and the effort that went into them. My son and his friends were only vaguely aware of southern California’s decades-long battle against air and water (2) pollution. As a result, they have no experience of hard-won success to draw on as they consider what their future holds. And because they’re not in the engineering facilities and meeting rooms where solutions to California’s current extreme drought and likely drier future are being crafted and implemented, they—and much of the rest of the public—don’t appreciate the stunning speed with which solutions such as stormwater capture and the potable reuse of treated wastewater are being developed and implemented.

Read more here

Our Deadened, Carbon-Soaked Seas

The New York Times, October 15th, 2015,

Ocean and coastal waters around the world are beginning to tell a disturbing story. The seas, like a sponge,

nytimes oa picare absorbing increasing amounts of carbon dioxide from the atmosphere, so much so that the chemical balance of our oceans and coastal waters is changing and a growing threat to marine ecosystems. Over the past 200 years, the world’s seas have absorbed more than 150 billion metric tons of carbon from human activities. Currently, that’s a worldwide average of 15 pounds per person a week, enough to fill a coal train long enough to encircle the equator 13 times every year.

We can’t see this massive amount of carbon dioxide that’s going into the ocean, but it dissolves in seawater as carbonic acid, changing the water’s chemistry at a rate faster than seen for millions of years. Known as ocean acidification, this process makes it difficult for shellfish, corals and other marine organisms to grow, reproduce and build their shells and skeletons.

About 10 years ago, ocean acidification nearly collapsed the annual $117 million West Coast shellfish industry, which supports more than 3,000 jobs. Ocean currents pushed acidified water into coastal areas, making it difficult for baby oysters to use their limited energy to build protective shells. In effect, the crop was nearly destroyed.

Human health, too, is a major concern. In the laboratory, many harmful algal species produce more toxins and bloom faster in acidified waters. A similar response in the wild could harm people eating contaminated shellfish and sicken, even kill, fish and marine mammals such as sea lions.

Increasing acidity is hitting our waters along with other stressors. The ocean is warming; in many places the oxygen critical to marine life is decreasing; pollution from plastics and other materials is pervasive; and in general we overexploit the resources of the ocean. Each stressor is a problem, but all of them affecting the oceans at one time is cause for great concern. For both the developing and developed world, the implications for food security, economies at all levels, and vital goods and services are immense.

This year, the first nationwide study showing the vulnerability of the $1 billion U.S. shellfish industry to ocean acidification revealed a considerable list of at-risk areas. In addition to the Pacific Northwest, these areas include Long Island Sound, Narragansett Bay, Chesapeake Bay, the Gulf of Mexico, and areas off Maine and Massachusetts. Already at risk are Alaska’s fisheries, which account for nearly 60 percent of the United States commercial fish catch and support more than 100,000 jobs.

Ocean acidification is weakening coral structures in the Caribbean and in cold-water coral reefs found in the deep waters off Scotland and Norway. In the past three decades, the number of living corals covering the Great Barrier Reef has been cut in half, reducing critical habitat for fish and the resilience of the entire reef system. Dramatic change is also apparent in the Arctic, where the frigid waters can hold so much carbon dioxide that nearby shelled creatures can dissolve in the corrosive conditions, affecting food sources for indigenous people, fish, birds and marine mammals. Clear pictures of the magnitude of changes in such remote ocean regions are sparse. To better understand these and other hotspots, more regions must be studied.

Read more here

New England Takes on Ocean Pollution State By State

By Patrick Whittle, Associated Press, March 30, 2015

Portland, Maine — A group of state legislators in New England want to form a multi-state pact to counter increasing ocean acidity along the East Coast, a problem they believe will endanger multi-million dollar fishing industries if left unchecked.

The legislators’ effort faces numerous hurdles: They are in the early stages of fostering cooperation between many layers of government, hope to push for potentially expensive research and mitigation projects, and want to use state laws to tackle a problem scientists say is the product of global environmental trends.

But the legislators believe they can gain a bigger voice at the federal and international levels by banding together, said Mick Devin, a Maine representative who has advocated for ocean research in his home state. The states can also push for research to determine the impact that local factors such as nutrient loading and fertilizer runoff have on ocean acidification and advocate for new controls, he said.

“We don’t have a magic bullet to reverse the effects of ocean acidification and stop the world from pumping out so much carbon dioxide,” Devin said. “But there are things we can do locally.”

The National Oceanic & Atmospheric Administration says the growing acidity of worldwide oceans is tied to increased atmospheric carbon dioxide, and they attribute the growth to fossil fuel burning and land use changes. The atmospheric concentration of carbon dioxide increased from 280 parts per million to over 394 parts per million over the past 250 years, according to NOAA.

Carbon dioxide is absorbed by the ocean, and when it mixes with seawater it reduces the availability of carbonate ions, scientists at Woods Hole Oceanographic Institution said. Those ions are critical for marine life such as shellfish, coral and plankton to grow their shells.

The changing ocean chemistry can have “potentially devastating ramifications for all ocean life,” including key commercial species, according to NOAA.

The New England states are following a model set by Maine, which commissioned a panel to spend months studying scientific research about ocean acidification and its potential impacts on coastal industries. Legislators in Rhode Island and Massachusetts are working on bills to create similar panels. A similar bill was shot down in committee in the New Hampshire legislature but will likely be back in 2016, said Rep. David Borden, who sponsored the bill.

Read more here

Washington’s Promising Pollution Story Starts With Oysters And Ends With Victory

ThinkProgress.com, by Natasha Geiling

Oct 28th, 2015

When Alan Barton first arrived at Whiskey Creek Shellfish Hatchery in 2007, he wasn’t expecting to stay very long. The hatchery — the second-largest in the United States — was in trouble, suffering from historically high mortality rates for their microscopic oyster larvae. But Barton knew that in the oyster industry, trouble is just another part of the job.

As manager of the oyster breeding program at Oregon State University, he had already helped one oyster larvae breeding operation navigate through some tough years in 2005, when a bacterial infection appeared to be causing problems for their seeds. To combat the issue, he had created a treatment system that could remove vibrio tubiashii, an infamous killer in the oyster industry, from the water.

Barton made the winding two-hour drive up the Oregon coast from Newport to Netarts, thinking his machines could easily solve whatever was plaguing Whiskey Creek. But when Barton’s $180,000 machine turned on, nothing changed. The hatchery was still suffering massive larvae mortality — months where nearly every one of the billions of tiny larvae housed in the hatchery’s vast network died before it could reach maturity.

Two-hundred miles up the coast in Shelton, Washington, Bill Dewey was also stumped. As director of public affairs for Taylor Shellfish, the country’s largest producer of farmed shellfish, he couldn’t figure out what was causing the hatchery’s tiny larvae to die in huge numbers. He knew aboutvibrio tubiashii, so when the die-offs began, Dewey called Barton and asked if they could install his machines at Taylor Shellfish’s own hatchery in the Puget Sound. And like at Whiskey Creek, the machines did little to stop the mysterious waves of death that were consuming the hatchery’s oyster larvae.

Back in Oregon, a National Oceanic and Atmospheric Administration (NOAA)-vessel rocked by persistent summer winds was approaching Newport. Dick Feely, a senior scientist with NOAA’s Pacific Marine Environmental Laboratory, was just halfway through the first-ever survey meant to measure the amount of carbon dioxide in the surface waters of the Pacific Coast. Already, he could tell from the few samples they had collected that he and his team had the material for a major scientific paper. He called his boss at NOAA to tell him that there was something wrong with the water. It seemed that an increase in carbon dioxide in the atmosphere, propelled by the burning of fossil fuels, was also increasing the acidity of the water.

Read more here

Sea Change – Supply challenges and climate changes are forcing the U.S. seafood industry to adapt

March 2015, By Sherry Daye Scott, QSR Magazine

California-based fast casual Slapfish, which serves a range of premium seafood items—including a Bowl of Shrimp either chilled or fried—partners with Aquarium of the Pacific to develop and maintain a sustainable sourcing plan.

California-based fast casual Slapfish, which serves a range of premium seafood items—including a Bowl of Shrimp either chilled or fried—partners with Aquarium of the Pacific to develop and maintain a sustainable sourcing plan.

Though U.S. consumption is well below other proteins today, seafood will likely be an increasingly important part of the American diet in the years to come. The country’s population is predicted to grow by 89 million between 2010 and 2050 to 401 million people. More people require more food—and land limitations mean the beef, pork, and poultry industries can only produce so much volume.

Increased domestic consumption will have a direct impact on restaurant operators who serve finfish and shellfish. On one hand, more Americans eating seafood means the potential for increased sales. On the other, it also means the potential for higher wholesale prices. And while space limitations largely don’t affect the seafood industry, it has its own challenges to contend with, especially in the U.S.

For starters, more than 90 percent of the seafood the U.S. consumes is imported from countries with their own growing demand for protein. China, the global seafood producer and processor leader, is experiencing a rise in its middle class. China used to be a net exporter of seafood, but now it’s a net importer. The same is true of other seafood-producing countries in Asia and South America.

“If I am a buyer of seafood,” says Sebastian Belle, executive director of the Maine Aquaculture Association (MAA), “global demand is going to make it harder for me to source.”

In addition, climate changes are forcing suppliers to reevaluate their sourcing practices and invest in new practices, like aquaculture. These challenges have all levels of seafood stakeholders looking at new ways to approach the present—and future—state of the seafood industry.

Read more here

Seafood Producer’s Guide to Reducing Emissions, v1.1

Global Ocean Health is often asked what seafood producers can do to reduce their carbon emissions. While the emissions produced by the entire worldwide fishing industry are just a fraction of a fraction of a percent of global greenhouse gas production, if we want to stand as stewards of the ocean, it’s better to, “Walk the walk, not just talk the talk.” If seafood producers act as drivers for change, then being able to show you’ve made the effort to cut your own emissions footprint makes your stance more credible. Tackling ocean acidification involves not only driving better education, research, and policy, but also doing your bit to reduce emissions.

For the first time, accurate energy audits have been conducted on small commercial fishing vessels in Alaska, as part of a program initiated by the Alaska Fisheries Development Foundation (AFDF) and Sea Grant. “People in Alaska are familiar with home energy audits and this is basically a similar concept but on a fishing vessel. It becomes more complicated because there are more systems and different types of activities when you’re operating in different fisheries, things like that,” says Julie Decker, Director of AFDF.

The results from the 12 boats in phase one of the study were incorporated into an Energy Analysis Tool to help fishermen understand their vessel’s energy use and what equipment and operational changes could improve usage. In phase two, AFDF plans to launch a simpler version of the survey available via smartphone or over the web and is looking for more vessels to volunteer to participate. “You can see how much your hydraulics are using, or the main engine is drawing when you’re running around from fishery to fishery or how much your DC and AC systems are drawing, whether it’s for refrigeration, or what not,” says Decker. Go to their website to learn more about their energy audits, and read the story on AFDF’s search for volunteer vessels.

The list of possible actions in our guide is by no means complete, and we’d like to hear from you to help us improve it. Have you or your business done something that successfully reduced your carbon output, or encouraged others to do so? How did it turn out as a return on investment? Many companies find they end up saving money when they institute cuts in energy or fuel usage. We’d love to hear your stories, whether concerning your car, home, vessel, or company. And if you have questions for us, feel free to email info@globaloceanhealth. Thanks for reading, and happy fishing.

A few examples:

• Reduce vessel weight – weight control reduces the amount of power necessary to achieve a certain speed

• Maintain the bottom – in order to reduce drag, keep the bottom of the boat as smooth as possibly by removing marine growth and any other unnecessary elements

• Check the exhaust – exhaust from a well-maintained diesel engine is almost invisible

• Check the prop – bent blades, dings, or eroded edges cause the boat to consume more fuel

• Plan the route and timing – taking advantage of tides, currents, and predicted winds can easily save a lot of fuel

• Use a fuel meter on boats, and adjust the throttle to find the “sweet spot” in RPM where fuel consumption drops but speed is sufficient to meet the tides and delivery schedules (see graph below). Installing a simple device like a FloScan meter can help skippers optimize fuel use and vessel speed

• If you run an auxiliary diesel genset or two on your boat, consider a high-efficiency hydraulic generator from GenTech Global- Used with a good fuel meter, this system uses a proprietary software controller to run a generator directly off the main engine (no matter the rpm of the main), replacing a diesel genset, and cutting the cost of generating onboard electrical power in half—or better. The system is particularly valuable for some working vessels that need power for pumps, refrigeration, and other onboard systems

• Consider a Fitch fuel catalyst on your vessel engine. This simple device enhances fuel combustion; reduces emissions, injector fouling, and fuel consumption

• If you ship seafood, avoid airfreight wherever possible- Ship by water if you can, by rail or road otherwise. Airfreight dominates embedded emissions in most products that are shipped by air; it dwarfs everything else

picture of fuel efficiency• Slow down – This graph (extracted from a fuel efficiency audit) shows that increasing speeds greatly increases the power necessary and therefore the amount of fuel consumed. Decreasing your speed by just 1 knots could reduce your fuel cost by as much as 50%

• Got food waste or seafood processing waste? Compost it, or make fuel out of it. If it goes to the landfill, this waste frequently will form methane in the anoxic conditions below ground. Methane has ~21 times the insulating, warming power of CO2. A well-aerated compost pile converts the carbon into new soil material, where it becomes a useful nutrient instead of forming methane. You can also set up a simple biogas digester in a barrel and use it to generate fuel. If you burn it instead of venting it, biogas can replace commercially purchased fuel, shifting some of your energy demand to a carbon-neutral status. Instructions to do this are readily available on YouTube

• Ask your employees- Let your employees know that lowering energy costs and carbon emissions is important to your company. They may have a different perspective that could save you money and make your business greener.

• Don’t run more electrical than you need. Make certain that both on-shore and on-vessel you are not creating needless electrical draw. Turn computers completely off when not in use, as well as chargers, lights, printers – whatever the device, ensuring that small details are taken care of can make a real difference to your bottom line

• Consider adding a wind-powered charger or solar panels

• Keep good records- You only know whether you’re making an improvement (or making things worse) if you have good numbers on vessel performance, both before and after changes. At every fuel-up you should record fuel replaced, operating hours (from your hour meter or engine hour logbook), and if possible, distance traveled. Other observations such as changes in coolant and exhaust temperatures, oil temperatures and pressures, and speed over the ground (as indicated by GPS or LORAN readings) should be logged

• Do the math- Fuel is only one of the costs of your operation. You can’t manage what you don’t measure! Capital expenditure (the price of new equipment) and the value of your time and that of your crew are also costs. The cost of a solution, such as buying a new engine or even a new vessel, may be greater than the savings that could be realized. As fish prices, fuel costs, regulations, and other factors change, it is important to recalculate the trade-offs

• At home, work, or on-vessel – unplug, unplug, unplug. It’s convenient to keep that cell phone charger plugged in, and no harm done, right? Wrong. It continues to draw power even when no device is charging. Many electronics draw power even when turned off  – especially cable boxes; but also DVD/BluRay players, stereos, gaming consoles, etc. And don’t walk away with your computer on – screensavers or “sleep mode” are not the same as off. All these little things add up, and besides making a difference collectively, you might even see a drop in your monthly electricity costs.

RESOURCES:
Alaska Longline Fishermen’s Association Fuel Efficiency Initiative
Alaska Sea Grant Marine Advisory Program

Submit Your Razor Clam Survival Theory to Our “Panel of Doom”

razor clams, clam digging, Moclips, long beach, coastal, washington

Classic picture of clam diggers on the coast of Washington.

The pacific razor clam is an exceptionally meaty and delicious shellfish found on the outer coast beaches of Oregon, Washington, and Alaska. Washington has the largest area of razor clam habitat, with five beaches (including all 24 miles of Long Beach), some small stretches in state parks, as well as some co-managed on tribal land. It is an incredibly popular recreational fishery, with many people rushing out to gather their 15 clam quota at every opening. Speak to a local, and you’ll often hear of a tradition stretching back through several generations of their family.

Dan Ayres, the Department of Fish and Wildlife manager of the razor clam fishery, will even tell you that razor clams helped his grandfather survive the Great Depression. “He would ride down to the beach before dawn on the sideboards of a Model T, and harvest razor clams to trade for staples like milk and butter,” says Dan. For the local tribes, razor clams are important to both community identity and subsistence.

For the small rural communities where tourists flock for their quota, the razor clam makes

The author, Julia Sanders, on her first razor clam dig: night at Moclips Beach, WA

The author, Julia Sanders, on her first razor clam dig: night at Moclips Beach, WA

all the difference economically. The fishery is managed to provide for small monthly digs, rather than one big dig, to make it more beneficial for local businesses. An average season generates $22 million in economic revenue, and this last year (2013-2014), a banner year for clamming, generated over $40 million with over 450,000 digger trips. The author herself visited Moclips Beach this winter and had a ball learning to dig razor clams (see picture). For places like Moclips, razor clam revenue is the difference between a functioning economy or not – as they painfully learned during harmful algal bloom closures in 1999 and 2003.

So here’s where ocean acidification and our respected readers come in: nobody knows what the potential effect of OA might be on razor clams. No OA research has yet been done on them. The Washington Ocean Acidification Center made razor clams a high priority species in their first request for research proposals, but there weren’t any takers. Apparently there have been struggles in learning how to keep larvae thriving in a lab environment (although some have done it: WDFW ran a successful hatchery in the 80s, and Alutiq Pride Hatchery restored razor clam population to an Alaskan beach). There is still hope of future research: Terrie Klinger, of the OA Center, says, “We would be very interested in funding research on razor clams in the next biennium should we receive additional funding for experimental work.” Jeremy Mathis, whose influential research on OA and Alaska’s fisheries made a big media splash this year, also considers razor clams to be of high importance. We already know that shellfish are often the most vulnerable to OA, so why did the razor clam just have one of its best years? Why have there been no indications, as yet, to them being at all bothered by changing ocean chemistry?

razor clam

The Pacific razor clam, which averages 3-7 inches in length.

YOU TELL US! We have put together a prestigious panel of judges who will be looking over the theories we receive from our illustrious readers as to just why the razor clam seems to be doing so well (so far) despite being on the front lines of corrosive upwelled water. Then the judges will be putting their heads together to name winners of our various categories, to be announced in the next Ocean Acidification Report. The judges will be Meg Chadsey, Ocean Acidification Specialist at Washington Sea Grant, Dan Ayres, Coastal Shellfish Lead Biologist for WA Dept of Fish and Wildlife, and Joe Schumacker, Marine Resources Scientist for the Quinault Indian Nation.
Here are some theories to get you thinking:

1. Could razor clams benefit from good timing? In other words, is it possible that because they mostly spawn in springtime, most of the young animals at their most vulnerable life stage meet water that is sweeter than in summertime, protecting them from upwelled CO2-enriched waters that clobber some other calcifiers that spawn in the summer? Many oyster farmers have changed the time of year when they release seed to avoid the summer upwelling that causes such high mortality in oyster larvae.

2. When some of the clams hatch out late, what are they doing to cope?

3. Because razor clam populations occur in areas that are regularly exposed to the variable chemistry of upwelled waters are they more tolerant of changes in ocean chemistry?

4. Does hiding your head in the sand really work? Some research has shown that razor clams might be better at surviving hypoxia (periods of low oxygen, killing water) because adults can dig a meter or more into the sand, perhaps allowing them to find better oxygenated water. Could the same be true when OA chemistry becomes unbearable? Juveniles “set” in the sand at 5mm. They don’t have the same digging power, but it may provide some protection.

5. Are they made out of siliceous rock and tank treads?

Our winner’s categories – with plenty of room for everyone’s point of view:

“Most creative speculation”
“Best overall explanation”
“Most extreme wild goose chase”
“Why being dead wrong is sometimes a great way to learn”
“Go directly to jail. Do not pass go.”

To dig into what is known about the razor clam, some links to get you started:
http://wdfw.wa.gov/fishing/shellfish/razorclams/2013_razor_clam_season_setting.pdf
http://www.nwrc.usgs.gov/wdb/pub/species_profiles/82_11-089.pdf
http://www.adfg.alaska.gov/static/education/wns/razor_clam.pdf

Email theories to info@globaloceanhealth.org, or post on our Facebook page.
This is meant to be both fun and serious, so feel free to go wild with your best creative thinking. Beyond the prestige of seeing your name and theory in the next Ocean Acidification Report (which is mailed to over 6,000 readers in over 100 countries), Global Ocean Health will post the winners on Twitter (@GlobalOAHealth) and Facebook, and honor your contribution with a certificate (suitable for framing) to show all your friends. So please, get going and get us your theories in the coming month!