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The Caribbean reef squid is the only squid species commonly sighted by divers over inshore reefs in the Florida, Bahamas and Caribbean regions. They are also found around Brazilian reef habitats, due to a symbiotic relationship in which the squid protect juvenile fish from open-ocean predators. [5]
Sailors cleaning a ship near St. Ilona Island and Cape Nigra were attacked by a giant squid; two were pulled into the deep, and a third later died from injuries sustained during the attack. One of the squid's arms, severed during the attack, was 7.5 meters (25 ft) in length; the full arm was estimated to be 10 meters (33 ft).
Squids do not have the longitudinal muscles that octopus do. Instead, they have a tunic. [81] This tunic is made of layers of collagen and it surrounds the top and the bottom of the mantle. Because they are made of collagen and not muscle, the tunics are rigid bodies that are much stronger than the muscle counterparts.
A video of the same squid appears in a Japanese made-for-television film. [11] The image was published in the 1993 book European Seashells by Guido T. Poppe and Goto Yoshihiro, where it was identified as Architeuthis dux , the giant squid , and said to have been taken in the North Atlantic .
Huge squids 'talk' to each other ... using colors
If injured squid are targeted by a bass, they began their defensive behaviours sooner (indicated by greater alert distances and longer flight initiation distances) than uninjured squid. If anaesthetic (1% ethanol and MgCl 2 ) is administered prior to the injury, this prevents the nociceptive hypersensitisation and blocks the effect.
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Giant squid are described by Aristotle (4th century BC) in his History of Animals [57] and Pliny the Elder (1st century AD) in his Natural History. [ 58 ] [ 59 ] [ 60 ] The Gorgon of Greek mythology may have been inspired by the octopus or squid, the severed head of Medusa representing the animal, the beak as the protruding tongue and fangs ...