Octopus

Octopodes (Order: Octopoda, Superorder: Octopodiformes, Clade: Vampyropoda, Class: Cephalopoda, Phylum: Mollusca, Kingdom: Animalia) are an aquatic species who are known as some the most intelligent animals in the ocean, some scientists they come from outer space due to the fact they have heavily different DNA to any other creature on Earth.

In Popular Culture

 * In Resident Alien, Harry's Species are a descendent of Octopi which appeared on their planet via Panspermia