A Schilder's Tiger cowrie sea shell (Cyprae tigris f, shilderiana). These are large sea snails, marine gastropod molluscs in the family Cypraeidae. The beautiful porcelain-like shells are often used in jewelry.
This spiral sea shell is of the family Architectonicidae. Known as the staircase shells or sundials, they are sea snails, marine gastropod mollusks.
Dried specimen of Diodon holocanthus, long-spined Porcupine FIsh. Porcupine fish are also commonly called blowfish, puffer fish, balloon fish and globefish. They are in the family Diodontidae.