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www.reference.com/article/seashells-sound-like-ocean-e9b9c149246b7d66

When you put a seashell to your ear you are not hearing the ocean, you are hearing the ambient noise coming from inside your ear and around you. The seashell captures and amplifies the noise, which resonates inside the shell and sounds like the rolling waves of the ocea...

www.reference.com/article/seashells-made-14bdbdb2454a8b6f

Seashells are formed out of the calcium-rich outer mantle tissue of mollusks and certain other marine animals. The shells are made almost entirely from calcium carbonate excreted over a protein network generated by the top layer of the animal's body.

www.reference.com/article/seashells-formed-b43469a813aa45d5

Seashells, which are the exoskeletons of mollusks such as snails, clams and oysters, form from the bottom up starting with mantle tissue located underneath and in contact with the shell. The mantle secretes proteins and minerals to form layers. Mollusk shells have three...

www.reference.com/article/seashells-come-af5b6a92a78002e5

Seashells, often found washed up along the shores of oceans, are the skeletons of marine animals known as mollusks. Mollusks have exterior skeletons, whereas many mammals, including humans, have interior skeletons. The skeleton of a mollusk helps to protect it against t...

www.reference.com/article/clean-seashells-e7ab192ce162e627

While there are many ways to clean seashells, one easy way is to simply boil them, remove any animal tissue, clean the shells in a bleach solution and then oil them. This cleaning process takes only a few minutes.

www.reference.com/article/seashells-grow-79c274e44cf0048d

Seashells are exoskeletons of marine invertebrates such as mollusks and sea snails, and they grow from the inside out or by depositing new material at the edges, according to Scientific American. Two common types of seashells are bivalves and gastropod shells. The forme...

www.reference.com/science/can-tell-age-seashell-ba8939cfe0a8035e

The age of a seashell is dependent on a number of factors, including species of the animal carrying the shell. For bivalve organisms, the age of the shell can be determined by looking at cross-sections of the shell. An alternation in color is thought to represent a year...