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How many gastropod species are known worldwide?
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gastropod
The common snail (Helix aspersa).
There are more than 65,000 known gastropod species worldwide.12
These species are distributed across the three major habitats as follows:
* Marine: Approximately 30,000 species3
* Land: Approximately 30,000 species3
* Freshwater: Approximately 5,000 species3
As the largest group within the phylum Mollusca, gastropods include both snails and slugs, exhibiting a wide range of adaptations that allow them to thrive in environments ranging from tropical coral reefs to barren deserts.13