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An octopus (pl.: octopuses or octopodes [a]) is a soft-bodied, eight-limbed mollusc of the order Octopoda (/ ɒ k ˈ t ɒ p ə d ə /, ok-TOP-ə-də [3]).The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids.
Octopus is the largest genus of octopuses, comprising about 100 species. These species are widespread throughout the world's oceans. Many species formerly placed in ...
Long Island Sound is a large marine estuary in the Northeastern United States. It forms the maritime border between the states of New York and Connecticut.It is diverse and serves as a breeding ground to many different types of marine animal species; the following is a list of said species by scientific and/or common name.
There are similarities in both the speed and duration of bouts of swimming, the style of movement and the posture adopted by the two. Typically, the plate fish swims for about 6 seconds (3-43s) and the octopus for 2 seconds (1–20s) and both then rest for 2 or 3 seconds (1–8s flounder, 1–13s octopus) before swimming again.
The major neurotoxin component of the blue-ringed octopus is a compound originally known as "maculotoxin"; in 1978, this maculotoxin was found to be tetrodotoxin, [17] a neurotoxin also found in pufferfish, rough-skinned newts, and some poison dart frogs; the blue-ringed octopus is the first reported instance in which tetrodotoxin is used as a ...
Each species of cephalopod produces slightly differently coloured inks; generally, octopuses produce black ink, squid ink is blue-black, and cuttlefish ink is a shade of brown. A number of other aquatic molluscs have similar responses to attack, including the gastropod clade known as sea hares .
There are 300 species of octopus and they can be found in every ocean in the world, even the Arctic Ocean. Many species are found in the twilight zone, while others live closer to shore in warmer ...
The giant Pacific octopus was first described in 1910 by Gerhard Wülker of Leipzig University in Über Japanische Cephalopoden. He describes the species' morphology in detail, and mentions that there seems to be much variation within the species. [7]