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Macrotritopus defilippi
''Macrotritopus defilippi'', commonly known as the Lilliput longarm octopus or the Atlantic longarm octopus, is a small species of octopus, a marine cephalopod mollusc of the order Octopoda. 〔
This species occurs in the Atlantic Ocean, the Mediterranean Sea and the Indian Ocean. Its typical habitat is shallow sandy areas. Its yellowish-brown colouration enables it to blend into its surroundings making it well-camouflaged when stationary. In the Caribbean it has been found that when it moves around, it does so in such a way as to closely resemble the swimming behaviour of the plate fish (''Bothus lunatus''), a bottom-dwelling flounder which inhabits the same waters.〔
==Description==
''Macrotritopus defilippi'' is a small octopus with relatively long arms and a mantle length of up to . As is the case in most octopuses, the skin is variable in colour. It is usually either plain or speckled and closely matches the colour of its surroundings, the sandy plains on which it lives. Where the substrate includes gravel among the sand, the mottled pattern is often larger, there can be small papillae (fleshy protuberances) on the skin, and some light and dark barring on the arms. In some circumstances a white leucophore has been observed on the mantle tip; this may provide a disruptive camouflage when there are white pebbles in the vicinity. Like other octopuses, this species is able to vary its appearance to match its surroundings; when an individual is stationary on the sandy seabed, its colouring, patterning, and even brightness, so closely match the surroundings that the animal is very difficult to discern. This octopus can also bury itself in the substrate without leaving any visual trace of its position.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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