where does a octopus live
1 The octopus can only be found in salt water, but they live in all the oceans. The octopuses that live in warm waters tend to be small. The ones that live in colder waters are much larger. The octopus has a life span of 1 to 2 years. 2  There are about 300 known species of octopus.  The body of an octopus looks like a bag.