To mimic a toxic sea snake, it partially enters a burrow, leaving just two of its arms visible. To mimic a poisonous flatfish, the octopus swims with its arms held together and streaming behind it and its body flattened. Furthermore, observations have shown that it chooses an appropriate animal to mimic in order to protect itself from a specific predator. So far, it's been found to impersonate fifteen other animals, including fish, jellyfish, brittle stars, sea anemones, crabs, and shrimp. The ability of the mimic octopus to pose as other creatures is truly astounding, as shown in the videos below. Both animals feed on fish and crustaceans, including crabs. The background color of a mimic octopus is often dark brown or black, while the wonderpus species generally has a light-brown background tinged with orange or red.
#Mimic octopus license
The male generally dies soon after mating.Įlias Levy, via flickr, CC BY-SA 2.0 License The Mimic Octopus In most of the octopus species that have been studied, the female dies soon after she has finished caring for the eggs. Others, such as the female wonderpus octopus, attach the eggs to an arm and carry them around until they are ready to release the youngsters. Some females glue their eggs to the wall of a den and care for them until they hatch. The eggs are fertilized inside the female's body and then laid. In a few species, the male's arm detaches during mating instead of being extended and then retracted. During mating, the male uses a special arm called a hectocotylus to insert a sac of sperm into the female's mantle aperture. Octopuses of some species have been observed performing complicated courtship displays, which often involve color changes. As the chromatophores expand and contract they enable octopuses to alter their color or (as in the wonderpus octopus) to brighten and subdue the colors that are already present. The chromatophores are controlled by the nervous system.
#Mimic octopus skin
The skin of octopuses contains a very high density of cells called chromatophores, which contain pigments. The animals release a cloud of thick, dark "ink" from their ink sac to confuse potential predators and avoid becoming prey themselves. Most are not dangerous to humans, however. They suspect that all species of the mollusk are venomous. Scientists have discovered that at least some octopuses inject a toxin into their prey as they bite it. This action provides jet propulsion and enables the animal to move very rapidly. An octopus can forcibly expel water out of the siphon. The water then leaves the body through a tube called the siphon. The mantle moves as water flows under its edge and over the gills, where oxygen is extracted from the water. These organs include the three hearts, the digestive, excretory, and reproductive organs, and the gills, which are used for breathing. The mantle of an octopus is a thick layer of skin and muscle that forms a bag-like structure covering the organs. Prilfish, via flickr, CC BY 2.0 License Internal Organs and Chromatophores
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