species are "possibly extinct".

The number of prehistoric (fossil) species of gastropods is at least 15,000 species.

In marine habitats, the continental slope and the continental rise are home to the highest diversity, while the continental shelf and abyssal depths have a low diversity of marine gastropods.

Habitat

Gastropods are found in a wide range of aquatic and terrestrial habitats, from deep ocean trenches to deserts.

Some

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