An octopus wager is a bet that a player will score a touchdown and then the same player will immediately score a two-point ...

This underwater alliance between octopus and fish tends to pay off for both. Learn why the relationship works.

There are 300 species of octopus and they can be found in every ocean in the world, even the Arctic Ocean. Many species are found in the twilight zone, while others live closer to shore in warmer ...

Discover how researchers identified an octopus' ancient sex chromosomes and why their genetic history is such a mystery.

Scientists at University of Oregon discover one of the oldest known animal sex chromosomes in California two-spot octopus.

Cephalopods may have the oldest sex chromosomes of any animal, according to a new discovery in the octopus genome.