50.0 MB (2.6 MB compressed)
5129 x 3407 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
PHOTOSTOCK-ISRAEL / SCIENCE PHOTO LIBRARY PHOTOSTOCK-ISRAEL / SCIENCE PHOTO LIBRARY
Day Octopus (Octopus cyanea). Octopoda). This marine invertebrate is a cephalopod mollusc. The octopus has a large brain and well-developed eyes. Eight tentacles form a ring around its mouth (a horny beak, not seen). It swims by jet propulsion with its body sac (upper left), or it crawls over rock surfaces. It lives in a cave or a crevice in rocks, emerging to hunt. Its prey is mostly crabs and lobsters, which it paralyses by injecting a poison. Some octopuses can reach a length of over one metre. Octopuses can vary their skin colour and may eject a cloud of ink when alarmed. Photographed in the Red Sea Israel.
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