Video of the giant squid in action: it is not the “kraken” of science fiction but it looks like that. Illustrative photo: Website
several legends and science fiction works tell the adventures of sailors whose ships were captured octopus and giant squid.
One of the most famous stories is about one of these sprawling creatures known in Norway as “kraken” (twisted animal), a name that has been given in recent times to many types of large cephalopods.
Various legends tell of the adventures of sailors whose ships were captured by giant squid. Photo: WP / La Vanguardia
Specimens like the ones in the image above are pure fantasy, but there are giant squid and giant octopusesalthough they are unable to “swallow” vessels.
Several species of these large marine invertebrates are known to survive in various parts of the Pacific and Atlantic oceans; despite the fact that scientific data and observations in their natural environment are very scarce (Most sightings are from random catches).
“blurry”
In Spanish waters, for example, the best known species is the giant Atlantic squid (Dome Architeuthis)which on the coast of Asturias is known as “peludín”.
Various scientific teams have tried to learn more about these seabed inhabitants and, on some recent occasions, have succeeded. images of living specimens.
The most effective method of achieving this are cameras. underwater robotsoperating automatically or remotely, in areas where bait or prey have been placed.
One of the best videos of this kind was made by the international team led by Nathan J. Robinsonof the Cape Eleuthera Institute, in the Bahamas.
The shots were taken near the Bahamas. Photo: ScienceAlert
This team has been working with an underwater fixed platform for more than 10 years in the Gulf of Mexiconear the Bahamas.
The first results of his research, with data and images of various species of giant cephalopods at depths between 557 and 950 meterswere published in June 2021 in Deep Sea Research Part I: Oceanographic Research Papers.
Giant arms and fake jellyfish
One of the most popularly interesting facts is that, using scientific means, it has been calculated that took up the arms of the giant squid (these cephalopods have eight arms and two tentacles) measured approximately 1.68 meters in length.
Nathan Robinson’s team came up with their own solution to attract the squid so that they could be filmed (with sufficient light).
Since giant squid eyes are optimized to see shorter wavelength blue light, they used a red light with the longest wavelength that it wouldn’t bother them so they could see the animals on video.
Finally, they added a bait: a fake jellyfisha gelatinous mass with lights that mimic the intermittent blue bioluminescence emitted by an atoll jellyfish.
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Source: Clarin
