Although the bite of other cephalopods, such as octopuses in the genus. rubescens, as in other octopuses, at the time of the bite, the animals inject a proteolytic enzyme or venom via the salivary proboscis (Ballering, et al., 1972). Like other octopuses, the giant Pacific octopus has blue, copper-rich blood that helps it obtain oxygen in cold water. The bite of an octopus is produced by its beak-like jaws located in the mouth at the center of the arms. This octopus is generally reddish-brown, but special pigment cells in its skin change texture and color to camouflage the animal against rocks, plants, and coral. Its beak and radula are at the center of the mantle. Like other octopuses, the giant Pacific octopus exhibits bilateral symmetry and has a bulbous head, eight sucker-covered arms, and a mantle. Fun Fact: Despite its large size, it can escape any container with an opening large enough for its beak.Average Size: 15 kg (33 lb) with arm span of 4.3 m (14 ft).Distinguishing Features: Reddish-brown octopus with large head, mantle, and eight arms, usually identified by its large size.Other Name: North Pacific giant octopus.
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