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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]
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.
Like many other octopuses, the blanket octopus uses ink to intimidate potential predators. [7] Also, when threatened, the female unfurls her large net-like membranes that spread out and billow in the water, greatly increasing her apparent size. Blanket octopuses usually live in coral reefs, where they hunt for food, which consists of small fish.
The octopuses seen in the videos threw silt, shells, and algae at other nearby octopuses. To do so, they gathered up the debris underneath their bodies using their arms.
The Atlantic pygmy octopus (Octopus joubini), also known as the small-egg Caribbean pygmy octopus, is a small species of octopus in the order Octopoda.Fully grown, this cephalopod reaches a mantle length of 4.5 cm (1.8 inches) with arms up to 9 cm (3.5 inches) long. [2]
Octopuses have many different adaptations in order to protect themselves from predators, and many octopuses utilize similar strategies. Some employ camouflage through which they use chromatophores to change their color. Many octopuses use a projection of ink in order to startle and distract predators.
The post Octopuses torture and eat themselves after mating, and scientists finally know why appeared first on BGR. Nature is made up of some amazing and intriguing creatures. Perhaps one of the ...
While octopuses generally avoid humans, attacks have occasionally been verified. For example, a 240-centimeter (8-foot) Pacific octopus, said to be nearly perfectly camouflaged, approached a diver and attempted to wrap itself around the diver and his camera. Another diver recorded the encounter on video.