SUSAN SCOTT PHOTO A great green turban snail operculum closes tight on a Tahiti reef. The snail is the great green turban, or Turbo marmoratus, a nocturnal algae-grazer native to the Indian and ...

High Country News’ twice weekly email newsletter includes our latest on-the-ground reporting and investigations from across the West. Scientists have known that by studying these scars they can glean ...

Black turban snails are small marine snails that make tasty prey for crabs. Failed crab attacks leave scars on a snail’s shell. By analyzing the rate of scarring and the size of the snail when it was ...