The Habits Of Cephalopods

Cephalopods are usually dioecious and heteromorphic. The size and the proportions of body parts of the two sexes generally have little difference, but the males of Argonauta and Tremoctopus are much smaller than females.

There are a series of cyst-like structures on both sides of the male vas deferens, which are used to produce long tubular sperm pods for storing sperm. The sperm pod has a complex structure, including seminal vesicles, middle part, horns, lid and other parts.

Cephalopods have courtship behavior. During mating, the male uses a specialized crotch arm (stem arm) to deliver the sperm pods that store sperm to the female's coat cavity or on the pad under the mouth. The hand-over wrists of the boat octopus and the water hole octopus are self-cut and remain in the female's coat cavity. The fertilized egg is born soon.

An octopus can lay dozens to 100,000 eggs. Squid lays about 200 to 300 eggs, and squid lays thousands of eggs. Eggs are laid on the coast and attached to objects on the seabed individually or in clusters.