This is a companion piece to the article describing the increasing risk to putting your toe in the water at the beach. At least humans can choose whether or not to subject themselves to these new risks of the climate crisis. Mussels that are essentially fixed in place can’t move and have no air conditioning. It only take those two lacks to wind up dead.
Temperatures in California are so hot, mussels are being cooked inside their shells
- In the last few months, heat waves have baked India, Pakistan, and most recently, Europe. Near-record temperatures have sparked wildfires, water shortages, and resulted in multiple deaths during such heat waves.
- California hasn’t escaped unscathed, either. Residents and local flora and fauna experienced a record-breaking June heatwave.
- This caused the largest die-off of mussels in some 15 years at Bodega Head bay in northern California.
- Temperatures were so hot that these mussels actually cooked inside their shells.
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The phrase “hot enough to fry an egg on the sidewalk” is oft met with rolled eyes and accusations of exaggeration. But this past month, California shellfish experienced temperatures so hot that such a phrase may not be hyperbolic.
In June, temperatures at Bodega Bay in northern California reached in excess of 100 degrees Fahrenheit. That was hot enough to cook local mussels inside their shells.
The mussels — firmly stuck to coastal rocks, where they feed on plankton floating in the sea water — are exposed at low tides to the scorching sun. According to a research coordinator at Bodega Bay marine reserve, Jackie Sones, this month a California heat wave roasted these shellfish where they sat.
And it might not be just Bodega Bay, a picturesque inlet on the coast of California’s wine country. Sones reported that other researchers told her about similar mass mussel deaths up and down 140 miles of the state’s coastline.
Rippling effects of heat waves and warming temperatures
This isn’t the first time mussels have roasted en masse. In 2004, a biologist at the University of British Columbia, Christopher Harley, reported a similar incident, though he and Sones think this year’s die-off is likely worse.
“These events are definitely becoming more frequent, and more severe,” Harley told The Guardian. “Mussels are one of the canaries in the coal mine for climate change.”
Warming temperatures not only cook mussels inside their shells, but also precipitate climates where flesh-eating bacteria can spread farther, faster in US waters.
The bacteria, Vibrio vulnificust, thrives in warm salty or brackish water. It can cause a flesh-eating disease that can sometimes result in amputations or death. People can contract a Vibrio infection after wading in this water with an open wound or eating raw shellfish from the water.
According to a March 2019 study, if greenhouse gas emissions continue to rise unabated, nearly 1 billion new people will be exposed to two species of disease-carrying mosquito over the next 60 years.
Europe, the US, and Canada, in particular, will see increased exposure.