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Molluscs include slugs and snails, oysters, squid, octopus and cuttlefish. They live mainly in the sea, some live in freshwater or on land. There are about 70,000 species of mollusc described, 2163 of which have been assessed for threatened species status, 975 of these are classed as at risk of global extinction. Over half the mollusc species at risk are in the United States, Australia, Portugal and Ecuador. The Dlinza Forest Pinwheel snail is critically endangered. It only lives in the very small Dlinza Forest, of South Africa. There is concern about the effects of extreme weather and climate change on this species. |
"Conservationists argue that humans have an ethical obligation to protect other species, that diversity and natural beauty are highly prized by mankind, and that biodiversity is a vital resource ..." John Pickrell, 2006 |
Territory size shows the proportion of mollusc species assessed as locally at risk of extinction, found there.
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All of the data we use is estimated; 
Open Population Map for comparison