Beachgoers In Spain Face Invasion Of Jellyfish
Earlier this year, new research revealed that there is no real evidence supporting the idea that global jellyfish populations are on the rise. That’s still true, but that doesn’t mean that there aren’t going to be occasional jellyfish blooms like the one invading the Mediterranean Sea this summer. It’s so bad in some places, like beaches on the Spanish island of Formentera, that swimmers aren’t going into the water at all. Scientists are blaming overfishing for the increase in jellyfish, but climate change is most likely another contributing factor. Listen to this post from NPR to learn more.
Mercury levels in Pacific fish likely to rise in coming decades
New research suggests that levels of mercury in Pacific Ocean fish will increase in the coming decades. The researchers found that 80 percent of the toxic form of mercury (methylmercury) found in the tissues of deep-feeding fish in the Pacific is produced by bacteria living deep in the ocean. The study also confirmed that mercury found in fish near Hawaii traveled through the air, most likely for thousands of miles before reaching the ocean surface by way of rainfall. Other studies have found that the amount of methylmercury in the deep sea could double by mid-century. If that’s true, fish will have much higher levels of mercury. To learn more, check out the associated post from the University of Hawaiʻi at Mānoa: Ocean fish acquire more mercury at depth, research ascertains.
Undersea observatory reveals what’s in the ocean off the coast of Vancouver Island
Off the coast of Vancouver Island, 850 kilometers of cable runs along the seafloor, making NEPTUNE the “largest regional cabled undersea observatory network in the world.” The cables are hooked up to several scientific instruments that collect data and photos, allowing researchers to learn more of the ocean’s secrets. Check out this great post that explains this amazing international collaboration.
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