Upon hatching, the tiny octopods, which closely resemble their parents, spend several weeks drifting in the plankton before taking refuge on the bottom. During the four to eight weeks required for the larvae to hatch, the female guards the eggs, cleaning them with her suckers and agitating them with water. vulgaris mates during the winter, and the eggs, about 0.3 cm ( 1/ 8 inch) long, are laid under rocks or in holes, the total number of eggs amounting to more than 100,000. Octopuses have separate sexes, and the male has a specially modified arm, called a hectocotylus, by means of which it inserts spermatophores, or packets of sperm, directly into the female’s mantle cavity. Such behaviour is regarded by biologists as the first documented example of tool use by an invertebrate.
Octopus pictures portable#
In 2009 biologists reported having observed the animals excavating coconut half shells from the ocean floor and carrying them for use as portable shelters. The veined octopus ( Amphioctopus marginatus) is also known for its intelligence. Get a Britannica Premium subscription and gain access to exclusive content.
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Octopus pictures how to#
COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today. An octopus ( PL: octopuses or octopodes, see below for variants) is a soft-bodied, eight- limbed mollusc of the order Octopoda ( / ktpd /, ok-TOP-d 3 ).Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.From tech to household and wellness products.
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