sunset shell
noun
1- a burrowing bivalve mollusc with a long oval shell which (in some kinds) is pinkish with ray-like markings紫云蛤。
1.1
- Genus Gari, family Psammobiidae (or Sanguinolariidae).紫云蛤属, 紫云蛤科（或紫蛤科）。