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An octopus (pl.: octopuses or octopodes [a]) is a soft-bodied, eight-limbed mollusc of the order Octopoda (/ ɒ k ˈ t ɒ p ə d ə /, ok-TOP-ə-də [3]).The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids.
The common octopus (Octopus vulgaris) is a mollusk belonging to the class Cephalopoda. Octopus vulgaris is one of the most studied of all octopus species, and also one of the most intelligent. It ranges from the eastern Atlantic, extends from the Mediterranean Sea and the southern coast of England , to the southern coast of South Africa.
The octopuses were able to flatten their bodies and put their arms back to appear the same as the flounders as well as move with the same speed and movements. [ 79 ] Females of two species, Ocythoe tuberculata and Haliphron atlanticus , have evolved a true swim bladder .
Octopuses are known to be shy and usually friendly towards humans, they usually just want to be left alone. Their strong suckers on their arms can be dangerous if they lock onto a human since the ...
In addition, the octopus (along with cuttlefish and squid) is a significant source of protein for human consumption. About 3.3 million tonnes (3.6 million short tons) are commercially fished, worth $6 billion annually. [ 3 ]
Cirrina or Cirrata is a suborder and one of the two main divisions of octopuses. Cirrate octopuses have a small, internal shell and two fins on their head, while their sister suborder Incirrina has neither. The fins of cirrate octopods are associated with a unique cartilage-like shell in a shell sac.
A new analysis of the kitten’s stunningly-preserved head and upper body shows it was just 3 weeks old when it died in what is now Russia’s northeastern Sakha Republic, also known as Yakutia.
The common blanket octopus or violet blanket octopus (Tremoctopus violaceus) [4] is a large octopus of the family Tremoctopodidae found worldwide in the epipelagic zone of warm seas. The degree of sexual dimorphism in this species is very high, with females growing up to two meters in length, whereas males grow to about 2.4 cm.