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Little is known about the reproductive cycle of armhook squid. Most squid species whose reproduction has been observed have been seen to deposit eggs on the sea floor, then leave the eggs to hatch on their own. Five female Gonatus onyx squids have been observed in Monterey Canyon dragging a membrane sack containing 2,000 to 3,000 developing ...
Squid can expel up to 94% of the fluid within their cavity in a single jet thrust. [68] To accommodate the rapid changes in water intake and expulsion, the orifices are highly flexible and can change their size by a factor of 20; the funnel radius, conversely, changes only by a factor of around 1.5. [76]
An hour later they showed no reaction to the blue light. However, between 6 and 12 hours after the training, they again responded to the blue light, but more tentatively. The researchers concluded that nautiluses had memory capabilities similar to the " short-term " and " long-term memories " of the more advanced cephalopods, despite having ...
Adults venture out into open water and can be found in depths up to 150 m. When mating, adults are found near coral reefs in depths of 1.5 to 8 metres (5 to 26 ft). The Caribbean reef squid is the only squid species commonly sighted by divers over inshore reefs in the Florida, Bahamas and Caribbean regions.
G. onyx is a relatively smaller-sized squid with an average mantle length of about 12 cm (4.7 in), with some warmer water individuals reaching up to 18 cm (7.1 in). ). This species shows sexual dimorphism in mantle size with females maturing faster and growing a couple of centimeters larger than the
The squid floats along the water upside down with one eye aimed at the ocean floor and the other looking above. Named for its bright red color, the squid has red-tinted photophores (light-emitting ...
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 .
The firefly squid inhabits the waters off the coast of Japan. [13] [14] The depth at which these squids can be found varies (300–400 m or 1,000–1,300 ft during the day, and 20–60 m or 70–200 ft during the night) over the course of a day, [14] as they are one of the several species of squid that participates in diel vertical migration.