In ancient legend they were called the kraken, fearsome sea monsters of giant proportions that would drag sailors down to their doom. More than 2,000 years later, the world still remains mystified by the creatures we now know as giant squids. But researchers, led by internationally renowned zoologist Tsunemi Kubodera, are doing their best to unlock the secrets of the fabled deep-sea denizens. Last week at the National Museum of Nature and Science in Tsukuba, Ibaraki Prefecture, Kubodera conducted a dissection of a 394-cm-long specimen along with a team of researchers from universities and other institutions around the country. "The giant squid is a very rare animal," said Kubodera, who in 2012 became the first person in the world to film one of the giant creatures in its natural habitat, descending nearly 1 km beneath the surface in a small submersible to record the creature near the Ogasawara Islands about 1,000 kilometers south of Tokyo.
The extremely rare bigfin squid, a deep-sea creature found more than 2 kilometres underwater, has been spotted in Australian waters for the first time. Deborah Osterhage at CSIRO in Hobart, Australia, and her colleagues came across the squid during underwater surveys in the Great Australian Bight, an open bay off Australia's southern coast. "I knew exactly what it was when I saw it, probably because I'm a bit of a deep sea geek," says Osterhage. "They're very rarely seen around the world." Only three sightings had previously been recorded in the southern hemisphere. Bigfin squid (Magnapinna) have a distinctive appearance: they have large fins that make their main bodies nearly as wide as they are long, and also have extremely long, filament-like tentacles, which they can bend into an elbow-like appearance.
Cock-eyed squid have one huge, bulging eye and another normal-sized eye, but the reason has remained a mystery. Now we have an answer. Kate Thomas of Duke University in North Carolina studied 161 videos of the creatures collected over 26 years by remotely operated submarines in Monterey Bay, California. The findings provide the first behavioural evidence that the two eyes are adapted to look in different directions. The large one points upwards to spot prey silhouetted against the sky.
An advisory panel proposed setting the annual catch quota for Japanese flying squid at 57,000 tons, the lowest ever, for the 2020 fishing year starting next month. The Fisheries Policy Council, which advises the agriculture, forestry and fisheries minister, suggested cutting the quota by 14.9 percent from the previous year, noting Monday that flying squid stocks are decreasing due to a worsening marine environment. Water temperatures are rising in the East China Sea, making it difficult for the squid to lay eggs and for eggs to hatch, people familiar conditions there said. Catches of the squid have been sluggish, falling to a record low 44,000 tons in the 2018 fishing year. In the first nine months of the 2019 fishing year, catches came to 21,000 tons, far below the quota of 67,000 tons.