Chambered nautilus

The nautilus dominated the ancient seas before the rise of fishes, and appeared about 265 million years before the first dinosaurs.

The chambered nautilus is one of six species of nautilus, the only cephalopods (squids, octopuses and relatives) that have external shells.…

Chambered Nautilus

While human and cephalopod evolution diverged hundreds of millions of years ago, their eyes share a remarkable similarity with our own. One of the most intriguing examples of convergent evolution, cephalopod eyes are a window into the evolution of sight – and how the most intelligent invertebrates on the planet perceive the world.

A nautilus has hatched at the Birth Aquarium at Scripps Institute of Oceanography at University of California in San Diego in La Jolla, California, a