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From underwater adhesives to camouflage to suction cups, we have learned a lot from the octopus. Recently, researchers in Singapore built an underwater robot based on an octopus. This robot has ...
Someday, the researchers say they hope their method can be used to design military vehicles that can automatically camouflage themselves. And other research in recent years has focused on ...
Secrets of the Octopus explores the life, culture, and behavior of different octopus species across the globe. Featuring narration by actor Paul Rudd, and commentary and discussion by a number of marine biologists, scientists, and experts in the field, the documentary series seeks to bring viewers closer than ever to one of the planet's most elusive and alien creatures.
It has the common name algae octopus due to its typical resting camouflage, which resembles a gastropod shell overgrown with algae. It is small in size with a mantle around the size of a small orange ( c. 7 cm or 3 inches) and arms 25 cm (10 inches) in length, and is adept at mimicking its surroundings.
In ancient Greece, Aristotle (384–322 BC) commented on the colour-changing abilities, both for camouflage and for signalling, of cephalopods including the octopus, in his Historia animalium: [1] The octopus ... seeks its prey by so changing its colour as to render it like the colour of the stones adjacent to it; it does so also when alarmed .
The video shows the octopus spewing ink as it swims close to the camera. The seal, however, seems undeterred by the ink and quickly catches up with the octopus.
Camouflage enables an animal to remain hidden from view. Animals use colour to advertise services such as cleaning to animals of other species; to signal their sexual status to other members of the same species; and in mimicry, taking advantage of the warning coloration of another species.
The East Asian common octopus is adapted to a benthic life at the bottom of the sea. Octopus sinensis has long arms with many suckers used for catching prey, a mantle without a rigid skeleton, which allows them to inhabit and hunt in small spaces and crevices in the seabed, horizontal pupils, and versatile skin with ability to change colors and camouflage themselves with the sea floor.