Squid | Wikipedia audio article
Channel: wikipedia tts
Date: 27/06/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Squid


00:01:24 1 Taxonomy and phylogeny
00:02:29 1.1 Evolution
00:03:49 2 Description
00:06:02 2.1 Camouflage
00:08:07 2.2 Predator distraction with ink
00:08:43 2.3 Nervous system and sense organs
00:10:34 2.4 Reproductive system
00:12:28 2.5 Digestive system
00:13:58 2.6 Cardiovascular and excretory systems
00:14:58 2.7 Buoyancy
00:16:00 2.8 Largest and smallest
00:17:10 3 Development
00:19:08 4 Behaviour
00:19:17 4.1 Locomotion
00:20:48 4.2 Feeding
00:22:14 4.3 Reproduction
00:23:45 5 Ecology
00:25:07 6 Human uses
00:25:16 6.1 In literature and art
00:26:10 6.2 As food
00:27:15 6.3 Commercial fishing
00:27:49 6.4 In biomimicry
00:28:25 7 See also



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SUMMARY
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Squid are cephalopods in the superorder Decapodiformes with elongated bodies, large eyes, eight arms and two tentacles. Like all other cephalopods, squid have a distinct head, bilateral symmetry, and a mantle. They are mainly soft-bodied, like octopuses, but have a small internal skeleton in the form of a rod-like gladius or pen, made of chitin.
Squid diverged from other cephalopods during the Jurassic and occupy a similar role to teleost fish as open water predators of similar size and behaviour. They play an important role in the open water food web. The two long tentacles are used to grab prey and the eight arms to hold and control it. The beak then cuts the food into suitable size chunks for swallowing. Squid are rapid swimmers, moving by jet propulsion, and largely locate their prey by sight. They are among the most intelligent of invertebrates, with groups of Humboldt squid having been observed hunting cooperatively. They are preyed on by sharks, other fish, sea birds, seals and cetaceans, particularly sperm whales.
Squid can change colour for camouflage and signalling. Some species are bioluminescent, using their light for counter-illumination camouflage, while many species can eject a cloud of ink to distract predators.
Squid are used for human consumption with commercial fisheries in Japan, the Mediterranean, the southwestern Atlantic, the eastern Pacific and elsewhere. They are used in cuisines around the world, often known as "calamari". Squid have featured in literature since classical times, especially in tales of giant squid and sea monsters.