Comments of Octopus
Distribution:-
Octopus is cosmopolitan in distribution. It is commonly found in Europe and India. Atlantic and pacific Coasts, Alaska to lower california and cape cod.
Habit and Habitat:-
Octopus is a marine, bottom dwelling nocturnal Cephalopod spending daylight hours in rocky crevices, shady under-water caverns and in coral reefs.
General Characters:-
1) Octopus is popularly known as devil-Fish.
2) Body is globose and bag- like the head and trunk region.
3) Head bears a pair of eyes and eight elongated equal arms webbed at the base which surround the mouth.
4) Shell is absent.
5) Mantle enclosed the mantle cavity and the visceral mass.
6) Octopus produces inky-fluid which diffuses in water and forms a smoky screen for defense from the enemies.
Economic Importance:-
They have been used to study blood pigments, immune mechanisms, neurotransmitters and hormonal control of reproduction and aging, they are also known as Octopus.
Diagram of Octopus
