How is the octopus useful to humans?

Answer 1

It uses its funnel to shoot ink when it is in danger. Some octopi have special ink that can temporaly paralyze theyre enemys and some can only cloud up the water with it, While some others can only shoot out little blobs which they use as decoys for the predator to go after while they escape.

Answer 2

Octopuses are useful to humans, because we eat them, and we used to harvest ink from them. (That's where sepia ink comes from)

Answer 3

Octopus have babies out of their mouths. The male octopus have a mouth which is nonfunctional, just as human males have nipples that are nonfunctional.

Answer 4

Eat survive reproduce

Answer 5

because they are marine species