A marine mollusk uses calcium carbonate from the surrounding sea to build its ... often a sign that the snail was collected live and discarded, and its operculum reattached to the shell.

Beneath the crushing pressures and near-boiling waters of the Indian Ocean’s abyss crawls a creature so bizarre it seems ...

Also known as "volcano snails," these gastropods grow a suit of metal-enriched scaly armor and have an enormous heart, which helps them survive in oxygen-poor water in the deep ocean.

Starting when he was a Ph.D. student in the 1990s, he has monitored the evolution of two common species of sea snails living ...

Most nudibranchs go through a metamorphosis during their larval stages and lose the shell and operculum normally found in adult gastropods (snails ... to feed to the sea stars.

Worm snails also do not have a protective covering found in other snails called an operculum. This body part allows the snails to retreat further inside their shell and keep their bodies moist.

In a small garden hut in north-eastern Tunisia, just a short distance from what was once the Phoenician city of Carthage, one man has spent most of the last 16 years smashing up sea snails ...

These deep-sea snails inject toxins into their prey with precision with venomous, harpoon-like teeth. Found at 2770m to 3575m in the Arctic's Jøtul Vent Field, east of Greenland, this is the ...