Natalia Mesa was previously an intern at The Scientist and now freelances. She has a PhD in neuroscience from the University of Washington and a bachelor’s in biological sciences from Cornell ...

The California two-spot octopus (Octopus bimaculoides ... “This indicates that their common ancestor had this similar sex determination system,” Coffing said. Sex chromosomes directly impact ...

The octopus can produce an endless array of patterns ... ScienceDaily previously reported that the ancestor of octopuses and humans was the same primitive flatworm that trawled the sea floor ...