Most shells that are found on beaches are the shells of marine mollusks, partly because these shells are usually made of calcium carbonate, and endure better than shells made of chitin.

Ultimate guide to identifying shells. Pictures and cool facts for 63 amazing shells, including rare shells, huge shells, and a deadly shell.

seashell, hard exoskeleton of marine mollusks such as snails, bivalves, and chitons that serves to protect and support their bodies. It is composed largely of calcium carbonate secreted by the mantle, …

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Jul 20, 2022 · Shells come in a seemingly endless variety of shapes, but in fact they’re all versions of the same basic pattern: a spiral. That much is obvious in snail shells and less so in clams and other …

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Oct 12, 2023 · Shells found at ocean beaches were most likely inhabited by mollusks. Some of the mollusks have bivalve shells—two pieces that open and close—like clams, scallops, mussels and …

Jun 12, 2025 · We've outlined some of the prettiest shells you'll find on the beach and how you can identify them. Whether you're heading to Sanibel Island this summer or are planning a fall trip to …

Sep 3, 2024 · When walking along any beach in your country, you can find countless sea shells and conches, each more beautiful than the last. Here we'll give you some very common examples, and …

There are many types of sea shells and different variations of each. See classification and different types of shells you'll find within our site.