The octopus is not a squid.

The two belong to different organisms with differences. Octopus and squid can be distinguished from the morphology, octopus head carcass of about 7 to 9.5 cm, the head will have a larger compound eyes, and the body of the eight can be contracted carpal legs, each carpal leg evenly arranged with two rows of fleshy suckers. The squid has a pair of well-developed gill enclosures on either side of the head, a conical body, a pale body color with light brown coloration, 10 tentacles borne anteriorly, and a triangular fleshy fin at the tail end.

The octopus has a large head and mainly feeds on discriminating tentacles and crustaceans. The squid has an elongated body, with a pair of well-developed gills on either side of its head around its mouth, and feeds on krill, silver hammers, sardines, and small males.

Life Habits of the Octopus

Octopuses draw water into their outer coat membrane, breathe it in, and then expel it through a short funnel-shaped body tube. Most octopuses crawl along the bottom of the sea with suckers, but when startled they will eject water from their body tubes in a powerful jet, thus moving quickly in the opposite direction. When in danger, they spew out an ink-like substance that serves as a smokescreen, and some species produce a substance that can paralyze an attacker's sensory organs.

The octopus is a temperate mollusk, living underwater, adapted to the water temperature can not be lower than 7 ℃, the specific gravity of seawater 1.021 is the most suitable, low salinity environment will die. Sea area of the substrate is best for the gravel zone, the water temperature at 12 ℃ above the anniversary of the spawning, after hatching the baby fish full-length 3 mm or so, can ingest large animal plankton and growth, 45 days after the full-length 10-13 mm, sinking to the bottom of the sea camp benthic life. If there is no ceramic tile conch shells can be used as a living room, they will build their own houses.