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An octopus (pl.: octopuses or octopodes [a]) is a soft-bodied, ... In some species, the mantle can take on the spiky appearance of algae; in others, skin anatomy is ...
The common octopus (Octopus vulgaris) is a mollusk belonging to the class Cephalopoda. ... Water is pumped into the mantle cavity of the octopus, where it comes into ...
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 ...
Their maximum size is 20 cm (7.9 in) mantle length. [5] They have eight arms (like any other octopus), but these affixed together in an umbrella shape. [6] However unlike other octopus, they are unable to camouflage by changing skin color and texture. [7]
Macrotritopus defilippi is a small octopus with relatively long arms and a mantle length of up to 90 mm (3.5 in). As is the case in most octopuses, the skin is variable in colour. It is usually either plain or speckled and closely matches the colour of its surroundings, the sandy plains on which it lives.
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 ...
The thin-walled mantle of the wunderpus has weak musculature and wide aperture. [5] The head has a distinct neck area and is Y-shaped with the eye on each branch of the 'Y'. The head of a male wunderpus is wider than its mantle and for female wunderpus, their mantle is wider than their head. For females, this is due to the large ovary in their ...
It has the common name algae octopus due to its typical resting camouflage, which resembles a gastropod shell overgrown with algae. It is small in size with a mantle around the size of a small orange ( c. 7 cm or 3 inches) and arms 25 cm (10 inches) in length, and is adept at mimicking its surroundings.