Squid(Cephalopoda) | Characteristics, Habitats & Amazing Facts

Name - Squid

class : Cephalopoda

subclass : Coleoidea

Type : Aquatic Animal 

Age : 5-30 years 

Diet : carnivores and cannibalistic( may feed on each other)

Physical Characteristics:

Length : 60 cm (24 in) long

Weight : 0.3-500kg

Top Speed : 18 mph

Colour : from sandy brown to vibrant red or ripple with bright metallic rainbows

Skin Type : Tough(shell)

Lifespan : 5-30 years

Current Population : millions

Current Population Trend : decreasing

Native : Pelagic area of the ocean


Main Pray : feeding on all kinds of prey.

Habitat : shallow sea waters and also in the depths of the oceans.

Predators :  birds, sharks, tuna and other larger fish, toothed whales, some crabs, squid, and humans

Lifestyle : free to swim around in the sea at different depths. 

Favourite Food : fish and crustaceans

Amazing Facts

  1. Squid mostly have an annual life cycle, growing fast and dying soon after spawning. The diet changes as they grow but mostly consists of large zooplankton and small nekton. In Antarctica for example, krill is the main constituent of the diet, with other food items being amphipods, other small crustaceans, and large arrow worms.
  2. Squid form a major food resource and are used in cuisines around the world, notably in Japan.
  3. Although squid can catch large prey, the mouth is relatively small, and the food must be cut into pieces by the chitinous beak with its powerful muscles before being swallowed.
  4. Squids have elongated tubular bodies and short compact heads. Two of the 10 arms have developed into long slender tentacles with expanded ends and four rows of suckers with toothed, horny rings.
  5. The body of most squids is strengthened by a feathery-shaped internal shell composed of a horny material.
  6. The smallest squid is the Southern pygmy squid (Idiosepius notoides); males grow only to about 1.6 cm
  7. The largest recovered giant squids and colossal squids have measured nearly 13 metres (about 43 feet) long
  8. From the giant squid to microscopic squid babies, squids are beautiful and fascinating. As cephalopods, the same family as octopuses and cuttlefish, they have no bones, and swim head-first through the water with their 8 arms
  9. Though colour-blind, they are also able to instantly change colours, using different colours on their upper and lower bodies to blend into different backgrounds and attract potential mates.

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