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Octopus is the largest genus of octopuses, comprising about 100 species. These species are widespread throughout the world's oceans. Many species formerly placed in the genus Octopus are now assigned to other genera within the family. The octopus has 8 arms, averaging 20 cm (8 in) long for an adult.
A type of marine mollusc in the Cephalopod class of the Mollusca order — the Octopus. The preferred plural form is Octopuses. The main article for this category is Octopus .
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 World Register of Marine Species lists these 23 genera: [1] Abdopus Norman & Finn, 2001 (7 species) Ameloctopus Norman, 1992 (monotypic) Amphioctopus P. Fischer, 1882 (16 species) Callistoctopus Taki, 1964 (11 species) Cistopus Gray, 1849 (4 species) Euaxoctopus Voss, 1971 (3 species) Galeoctopus Norman, Boucher & Hochberg, 2004 (monotypic)
Octopodidae — the family containing the majority of known octopus species. Pages in category "Octopodidae" The following 76 pages are in this category, out of 76 total.
Researchers have identified an extinct vampire squid-like creature that is the first of its kind with 10 functional arms. The earliest known relative of octopuses and vampire squid has been named ...
Some mollusc species are commercially exploited and shipped as part of the international trade in shellfish; other species are harvested, sold and consumed locally. Some species are collected and eaten locally but are rarely bought and sold. A few species of molluscs are not commonly eaten now, but were eaten in historical or prehistoric times.
Some members of an octopus species hunt cooperatively in groups with fish, a new study found — an indication that some octopuses have richer social lives than scientists understood.