At the end of the semester in the advanced invertebrate zoology course I took, my rather dry, boring professor made the only joke I remember him ever uttering. We had just finished the phylum ...

The Bailey-Matthews National Shell Museum's new exhibit, "Brilliant Colors of the Sea," features photographs of nudibranchs. Nudibranchs are shell-less marine mollusks known for their vibrant colors ...

Nudibranchs are shell-less-molluscs. Mostly carnivorous, they come in a variety of colors and forms. Many of them have ‘cerata’ on their backs; these are horn-like, sometimes branched, protrusions ...

The vast majority of octopus species live along the sea floor--whether that is in the sandy shallows off a tropical coast or in the dark depths around hydrothermal vents. But a handful of octopuses ...

A video taken during a dive in Lembeh Strait, Indonesia, shows an aggressive coconut octopus walking across the ocean floor with the bivalve shell it uses for protection and lurching at the person ...

Photo by Graeme Kruger on Flickr (CC) Gas Flame Nudibranch Castle Rock Dive, False Bay, Cape Town, South Africa. Bonisa nakaza About 350 million years ago during the Carboniferous, a group of snails ...

When the word “shell” is mentioned, most people think of the seashell variety, although in this gun-control-conscious age, shell, as in ammunition, is the more common usage. With over 100,000 species ...

The Bailey-Matthews National Shell Museum and Aquarium on Sanibel Island has a new exhibit ready for you to enjoy. It's called "Brilliant Colors of the Sea: Nudibranchs and Their Relatives." ...