Octopuses is correct if you're referring to many different species of octopus. Octopi would be correct if you're referring to a cluster of one species of octopus.
Octopi would be correct if you're referring to a cluster of one species of octopus.
Based on what?
Octopuses is correct if you're referring to many different species of octopus. Octopi would be correct if you're referring to a cluster of one species of octopus.
Based on what?