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Octopus
mollusk genus
Learn about this topic in these articles:
characteristics and distribution
- In cephalopod: Reproduction and life cycles
The hectocotylized arm of Octopus bears a deep groove on one side, ending in a spoonlike terminal organ. In Argonauta and Tremoctopus the arm is highly modified and in mating is autotomized (self-amputated) and left within the mantle cavity of the female. In the squids a much larger section…
Read More - In cephalopod: Ecology
…restrictions in their distribution, but Octopus vulgaris and O. macropus, both species with planktonic larvae, have gained worldwide distribution. In general, the pelagic and planktonic cephalopods conform in their distribution to other pelagic animals.
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