Powerful warm-blooded bony fish return

“Atlantic bluefin tuna have returned to the waters off Yorkshire, England, after more than six decades. Bluefin tuna largely disappeared from the North Sea in the 1960s after severe overfishing and the collapse of herring stocks. Researchers attribute the recovery to international fishing restrictions, a greater abundance of prey, and warming seas that have widened the bluefin’s range,” reports The Doomslayer.

The Atlantic bluefin tuna is one of the largest, fastest, and most powerful warm-blooded bony fish in the world.

Cold water slows down normal cold-blooded fish. Being partially warm-blooded lets bluefin tuna swim faster, think quicker, and hunt more effectively in cold environments. Its warm muscles contract faster, allowing them to swim up to 40 miles per hour. Warm blood keeps their brain, eyes, and nervous system working fast in cold, deep water. They can thrive in freezing subarctic seas and warm tropical waters.

The Guardian explains:

“Researchers have lauded two giant bluefin tunas being caught off the coast of Yorkshire for the first time in more than six decades as a “success story” for marine conservation.

The tunas, which were caught a day apart off the coast of Whitby earlier this week, have mostly been absent along the north-east coast of Britain since the 1960s.

While small numbers of the species have been spotted in the waters around Yorkshire in the previous years, the pair were the first to be caught for market from the North Sea since licences to catch the fish were issued in July.

Rodney Forster, a professor at the University of Hull and head of the Hull marine laboratory, called the tuna’s reappearance a ‘success story about the management of fisheries’ in Britain.

‘They were fished almost to the point of extinction in their spawning grounds in the Mediterranean through the 70s and 80s,’ said Forster.

‘But now careful protection of the stock means they’ve increased, even to the point that they’re now spreading back out to their old grounds around the UK and even into the Baltic Sea.’”

“China’s endangered Yangtze finless porpoise is recovering…The population is now estimated at 1,426 porpoises, up from 1,012 in 2017,” reported The Doomslayer.

Blue whales have returned to parts of the Indian Ocean, thanks to the end of Communism, which wiped out countless whales. Communist Russia slaughtered much of the world’s whales, at least 180,000 of them. It killed far more indiscriminately than other whaling nations, and unlike them, it largely wasted the whales it killed, leaving their carcasses to rot. It has been called the most senseless environmental crime of the 20th Century.

“The Hawaiian stilt and the razorback sucker are no longer considered endangered in the United States following substantial recoveries.”

Snub-nosed monkeys are making a comeback in the mountains of China.