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Marine cephalopod
- Sepia is a marine cephalopod found up to 3000 metre depth. They are predators and feed on fish, crabs, shrimps and prawns that they seize with prehensile tentacles and oral arms which are supplied with suckers.
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Sepia is a genus of cuttlefish in the family Sepiidae encompassing some of the best known and most common species. The cuttlebone is ellipsoid in shape. The name of the genus is the Latinised form of the Ancient Greek σηπία ( sēpía ) "cuttlefish".
Cephalopod ink is a dark-coloured or luminous ink released into water by most species of cephalopod, usually as an escape mechanism. All cephalopods, with the exception of the Nautilidae and the Cirrina (deep-sea octopuses), [1] are able to release ink to confuse predators. [2]
Sepia is a marine cephalopod found up to 3000 metre depth. They are predators and feed on fish, crabs, shrimps and prawns that they seize with prehensile tentacles and oral arms which are supplied with suckers. Sepia can also change colour and some are bioluminescent. Body is divided into head and trunk.
Cuttlefish ink was formerly an important dye, called sepia. To extract the sepia pigment from a cuttlefish (or squid), the ink sac is removed and dried then dissolved in a dilute alkali. The resulting solution is filtered to isolate the pigment, which is then precipitated with dilute hydrochloric acid. The isolated precipitate is the sepia pigment.
5 days ago · cuttlefish, any of several marine cephalopods of the order Sepioidea, related to the octopus and squid and characterized by a thick internal calcified shell called the cuttlebone. The approximately 100 species of cuttlefish range between 2.5 and 90 cm (1 to 35 inches) and have somewhat flattened bodies bordered by a pair of narrow fins.
- The Editors of Encyclopaedia Britannica
The largest species is the giant cuttlefish (Sepia apama), which lives around southern Australia. It grows up to a maximal size of 50 centimetres (mantle and cuttlebone), growing to one metre and a half including the tentacles.
Cephalopod literally means 'head foot' and members of this group, including octopuses, cuttlefishes, squids and nautiluses, have their foot or tentacles connected to their head, not their body. Cephalopods have the most advanced nervous system of all invertebrate animals and are active hunters.
