Around 30 million years ago, a new group of predators began to push nautiloids from their former global range into a single remaining refuge. But who were these predators?

The ancestors of modern, squishy cephalopods like the octopus and the squid all had shells. In ancient times, their shell was their greatest asset but it eventually proved to be their biggest weakness.

What is the world's favorite fossil? Why the orthoceras of course! Hank will tell why that is in this episode of SciShow. Find out how you can get your very own orthoceras fossil.

Octopuses and other cephalopods can squirt ink when threatened, but the forms the ink takes can go way beyond your typical smokescreen.

The octopus is a pretty odd animal under even the most ordinary circumstances – or ordinary by octopus standards, at least. So when folks start calling out one type of octopus as the strangest, there’s probably something special about...

We now arrive at the most famous of the mollusks, the cephalopods. These include squids, nautiluses, cuttlefish, and the fascinating octopuses. These creatures are the largest and most intelligent invertebrates on Earth. Let's learn all...

We've covered most of Spiralia, but now it's time to dive into the final subclade, Lophotrochozoa. This contains several phyla, the most diverse of which is Mollusca. This phylum includes snails, slugs, octopuses, squids, oysters,...

Deep in the ocean, resting on the seafloor, there is a strange ecosystem – one built on the bodies of the dead. Join us on a tour of a whale fall.

Colorful Nautilus Shell with Watercolor Pencils | Grabie Product Review and Demo

In episode 25, Charlie and Jordan examine a rare nautiluses (not seen in 30 years), how to fold a shell and enrolling more girls in computer science classes.

The Dumbo Octopus is very good and mysterious. I love them a lot and I want everyone to know it.