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Cephalopod limbs bear numerous suckers along their ventral surface as in octopus, squid and cuttlefish arms and in clusters at the ends of the tentacles (if present), as in squid and cuttlefish. [9] Each sucker is usually circular and bowl-like and has two distinct parts: an outer shallow cavity called an infundibulum and a central hollow ...
Diagram of octopus from side, with gills, funnel, eye, ocellus (eyespot), web, arms, suckers, hectocotylus and ligula labelled. The skin consists of a thin outer epidermis with mucous cells and sensory cells and a connective tissue dermis consisting largely of collagen fibres and various cells allowing colour change. [26]
An octopus displaying its suckers. Cephalopods are characterised by elongated appendages known as cephalopod limbs for locomotion and grasping objects. There are two main types: arms, such as in octopus, bearing numerous suckers along its ventral surface; and tentacles, such as in squid and cuttlefish, having a single sucker at the tip. [12]
The octopus Thaumoctopus mimicus is known to mimic a number of different venomous organisms it cohabitates with to deter predators. [45] While background matching, a cephalopod changes its appearance to resemble its surroundings, hiding from its predators or concealing itself from prey.
American zoologist G. H. Parker found that the largest suckers on a giant Pacific octopus are about 6.4 cm (2.5 in) and can support 16 kg (35 lb) each. [3] The only other possible contender for the largest species of octopus is the seven-arm octopus ( Haliphron atlanticus ), based on a 61-kilogram (134-pound), incomplete carcass estimated to ...
Recently, scientists have witnessed a species of octopus, the gloomy octopus (Octopus tetricus), engaging in even more extraordinary acts than previously Find Out Why These Octopuses Throw Things ...
The fourth, ventral pair is slightly shorter. Suckers are small, widely separated, and in a single series. Male glass octopuses have a hectocotlylized third left arm. This refers to when the male is ready to mate with a female, the arm can detach and release sperm to impregnate the female octopus.
The octopus grabbed her hand and led her to something that it knew didn't belong on the ocean floor. ... Their strong suckers on their arms can be dangerous if they lock onto a human since the ...