The sea is home to billions of animals. Overfishing, climate change, sea warming and underwater noise will result in a catastrophe for billions of marine animals.

Why did billions of crabs disappear in Alaska So many crabs have disappeared from Alaskan waters that crab hunting has been banned. It may have to do with the warming of the Bering Sea. In 2018, around 8 billion crabs of the species Chionoecetes opilio still roamed at the bottom of the Bering Sea, between Alaska and Russia. Last year, that number fell to just under a billion â a decline of more than 87 percent.



Warmer sea The lack of crabs could be due to a warming Bering Sea in 2018 and 2019, says biologist Miranda Westphal, with the Alaska Department of Fish and Game (ADF&G). The crabs, which thrive best in colder water, may have been trapped in tiny bubbles of icy water. In those bubbles, they became separated from their food supply, and competition arose between crabs. And that, in turn, may have led to stress and a higher chance that the animals will become ill or fall victim to a predator. âObesity medication is not a quick fixâ. But there is more to it. At higher water temperatures, crabs' energy consumption increases, so they need more food. âAnd then they just eat each other.’

Protection of the remaining population Since the early 1980s, crabs have been found much further north than before, according to the US Environmental Protection Agency. Crab populations have moved about 30 kilometers north, probably because the animals were looking for colder water. Alaska has also stopped hunting the red king crab (Paralithodes camtschaticus) for the second year in a row. The reason is the small number of adult female crabs. It is not yet clear how long both hunting interruptions will last. Although the local fish industry is suffering severely, according to experts, the measure is necessary to protect the remaining crabs.

They are well on their way to plunder the sea

There are many ways to evade the rules to protect fish stocks. Dutch bulk fishermen are also guilty. Illegal catch ends up on the board, complete with a label. They are a bit awkward, almost shy, in the front porch of the court in the Namibian port city of Walvis Bay. Tight coat, jeans, sneakers, face mask: three Dutch boys, picked from their cabins and placed in a suspect bench in a distant country. They are the captain, first mate and chief of fishing of the Cornelis Vrolijk, a 113-metre-long Dutch freezer-trawler sailing under the Namibian flag. The charge: illegal dumping of fish.
Every year, an observer disappears somewhere in the world under suspicious circumstances, wrote The Guardian. Just last year, a 40-year-old observer from Kiribati was found dead on a Taiwanese fishing vessel. No one knows what happened.

So much noise in the sea that dolphins have to scream and work worse together

Dolphins use sound to communicate with each other. But it's getting louder underwater. Tumblers are hyper-intelligent animals and use sound for everything they do. Listening to the fish

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