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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 .
Opisthoteuthis mero, commonly known as Mero's umbrella octopus, [3] is a species of cirrate octopus from demersal habitats surrounding New Zealand. O. mero is the most documented New Zealand Opisthoteuthis species, with over 100 reference specimens. [4] O. mero reaches a maximum length of 34 cm (13 in), and a mantle length of 9 cm (3.5 in). [5]
Estimations of egg hatching time (using water temperature and egg size) for O. californiana are up to 1.4 years at 4°C. [11] [12] Mating has never been observed in O. californiana; the males lack the hectocotylus of typical octopus, instead having a series of enlarged suckers that presumably have a role in mating or competition. [11]
Octopus Cuvier, 1798 (99 species) Paroctopus Naef, 1923 (3 species) Pinnoctopus d'Orbigny, 1845 (2 species) Pteroctopus P. Fischer, 1882 (6 species) Robsonella Adam, 1938 (2 species) Scaeurgus Troschel, 1857 (5 species) Teretoctopus Robson, 1929 (2 species) Thaumoctopus Norman & Hochberg, 2005 (monotypic) Wunderpus Hochberg, Norman & Finn, 2006 ...
O. depressa is a small octopus. The animal's maximum size, measured from one arm tip to the opposite, is 200 mm (7.9 in). It has large eyes and small fins. Like other members of the cirrate octopus subgroup, it has a fleshy web connecting its arms, a small internal shell to support its body, fins to help it swim, and small fleshy tendrils called "cirri" lining its arms. [6]
Octopus vulgaris grows to 25 cm (10 inches) in mantle length with arms up to 1 m (3.3 feet) long. [3] It lives for 1–2 years and may weigh up to 9 kg (20 pounds). [4] [5] Mating may become cannibalistic. [6] O. vulgaris is caught by bottom trawls on a huge scale off the northwestern coast of Africa. More than 20,000 tonnes (22,000 short tons ...