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Many cephalopods including octopus, cuttlefish, and squid similarly use colour change, in their case both for camouflage and signalling. [24] For example, the big blue octopus, Octopus cyanea, hunts during the day, and can match itself to the colours and textures of its surroundings, both to avoid predators and to enable it to approach prey. It ...
Strategies to defend themselves against predators include the expulsion of ink, the use of camouflage and threat displays, the ability to jet quickly through the water and hide, and even deceit. All octopuses are venomous , but only the blue-ringed octopuses are known to be deadly to humans.
Octopuses are amazing creatures. They can squeeze themselves through tiny crevices. They have been known to pick locks and solve puzzles. They can change their colors to help camouflage themselves ...
Octopuses like this Octopus cyanea can change colour (and shape) for camouflage. 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]
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 ...
In contrast, when the octopus is in a relaxed state, the chromatophores will retract into the elastic sac. [6] As these chromatophores interact with their environment, it enables the octopus to select, at any time, a particular body pattern. This enables it for instance to camouflage itself and hide from their predators.
So, when an octopus encounters a predator, it has the sensory apparatus to detect the threat, and it has to decide whether to flee, camouflage itself, or confuse predator or prey with a cloud of ink.