Seashell - Wikipedia
A seashell or sea shell, also known simply as a shell, is a hard, protective outer layer usually created by an animal or organism that lives in the sea. Most seashells are made by mollusks, such as snails, clams, and oysters to protect their soft insides. [1]
Seashell | Definition, Types, & Facts | Britannica
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, a skinlike tissue in the mollusk’s body wall.
Types of Seashells - Bivalves, Gastropods, Scaphopods & More
2023年11月2日 · There are various types of seashells, including bivalves, gastropods, scaphopods, and cephalopods. Bivalves have hinged shells and examples include clams, oysters, and scallops. Gastropods are the largest group of mollusks and …
What are the Most Common Types of Seashells? - AnimalWised
2024年9月3日 · 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 then begin discussing more exotic specimens. You'll learn about the different types and see photos to help differentiate them.
Where Do Seashells Come From? - Ocean Conservancy
2023年10月12日 · Seashells are made of calcium carbonate. When you see a seashell by the seashore, you are seeing the empty shell of an animal that has died. The body that used to live inside the shell, usually soft and fleshy, has died, decomposed or been eaten by …
Seashell - Formation, Type and Quiz | Biology Dictionary
2017年6月5日 · A seashell is a hard, protective exoskeleton formed by invertebrate animals who live in the sea and are often found washed up on beaches throughout the world. The most common animals which produce a seashell are mollusks, crabs, oysters, barnacles, brachiopods, annelid worms, and sea urchins.
Seashells expert guide: what are they, where do they come ...
Seashells have so many stories to tell us about the sea, what lives there and how everything is connected – often in unexpected ways. Every day, as the tide rises and falls, new shells arrive …
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