How many octopus are in the ocean?
300 There are around 300 recognized octopus species, which is over one-third of the total number of known cephalopod species. Octopuses have three hearts. Two pump blood through each of the two gills, while the third pumps blood through the body.
Join Alexa Answers
Help make Alexa smarter and share your knowledge with the worldLEARN MORE