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Unable to defend themselves, octopuses often fall prey to predators. [76] This makes most octopuses effectively semelparous . The larger Pacific striped octopus (LPSO) is an exception, as it can reproduce repeatedly over a life of around two years.
Opisthoteuthidae are a group of octopuses characterized by a web of skin in between their arms. They broad U-shaped shell that support muscles for a pair of small fins on the mantle, these fins are far less developed than other families in Cirrina and essentially only act as stabilizers when the animal swims (using a medusoid motion of the arms and webbing). [1]
Blanket octopuses usually live in coral reefs, where they hunt for food, which consists of small fish. They also hide from their predators there, including larger fish and even whales. The risks these reefs face include coral bleaching and ocean acidification. Although this can be dangerous to the Blanket Octopus because it is their habitat ...
Octopuses taste by touching objects with their tentacles. Here's a sampling of the coolest animal discoveries from 2020. 22 discoveries this year changed our understanding of how animals ...
A group of researchers have documented octopuses “punching” fish during cooperative hunting expeditions, activity they recorded and shared on December 18.The footage seen here, recorded by ...
To understand the inner details of octopus lives, researchers dived for about a month at a reef off the coast of Eilat, Israel, and tracked 13 octopuses for a total of 120 hours using several cameras.
Mobbing is the harassing of a predator by many prey animals. Mobbing is usually done to protect the young in social colonies. For example, red colobus monkeys exhibit mobbing when threatened by chimpanzees, a common predator. The male red colobus monkeys group together and place themselves between predators and the group's females and juveniles.
Each species of cephalopod produces slightly differently coloured inks; generally, octopuses produce black ink, squid ink is blue-black, and cuttlefish ink is a shade of brown. A number of other aquatic molluscs have similar responses to attack, including the gastropod clade known as sea hares .