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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 , Black sea and the southern coast of England , to the southern coast of South ...
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.
Opisthoteuthis calypso or calypso flapjack octopus is a species of genus Opisthoteuthis, which are known as the cirrate octopuses. Octopuses in this genus are known as the flapjack octopuses and can be found in a variety of oceans across the world.
The mantle cavity is a central feature of molluscan biology. This cavity is formed by the mantle skirt, a double fold of mantle which encloses a water space. This space contains the mollusk's gills, anus, osphradium, nephridiopores, and gonopores. The mantle cavity functions as a respiratory chamber in most mollusks. In bivalves it is usually ...
This octopus' mantle reaches 53 millimeters long, and it weighs at least 1,345 grams when wet. [4] Every arm has between 60 and 70 suckers, which are small. Like other cirrates, G. meangensis has a web covering its arms to some degree; the web of G. meangensis covers the majority of its arms. The cirri on these arms are short. [3]
Opisthoteuthis japonica is a species of octopus that lives in the Pacific Ocean near Japan. Its mantle is about 45 millimeters long, and it's been found at 152 meters deep. [ 3 ] O. japonica lives in the neritic zone .
Opisthoteuthis agassizzi octopuses are small compared to most octopuses; males weigh up to four times more than females, and have a mantle length from 1 up to 2 + 1 ⁄ 2 inches. Males suckers are also much larger. The largest specimen, a male, had a mantle (the body not including the octopus' arms) reaching 63 mm, a little under two and a half ...
This octopus also has white spots along the dorsal mantle of its body. These white spots are characteristic as their shape is crescent-like. [7] "Abdopus" refers to small octopuses with long arms. [8] These octopuses are known to have less than 130 enlarged suckers running down their arms. [9]