Other Shells

Along with bivalves and univalves, there are other species of shellfish that you might encounter on your beachcombing expeditions.

Chitons

Chitons, oblong, flattened animals whose shell consists of eight overlapping plates, are commonly found under rocks. Chitons have "teeth" to scrape algae off the rocks. These teeth are magnetic!The...

Sand Dollars

Other types of shellfish commonly encountered are the shells or "tests" of sand dollars, that have a distinctive flower-like star pattern. They are dark and spiny when alive and are related to sea...

Alien species

Many of the shells you will find are species brought here intentionally for aquaculture or accidentally as hitchhikers, from fouling on ships or in their ballast water. These include the Pacific...