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 seas... More » Pets & Animals Marine Life

A method to identify seashells is to use an online seashell identification guide website such as The website shows thumbnails of seashell pictures with names. Match up the seashell to a picture, and click ... More » Science Biology Zoology

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 s... More » Science Earth Science
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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 ... More » Pets & Animals Marine Life

There are many different oceanic mollusks, such as clams, octopus and oysters, but there are also mollusks that live on land, such as snails and slugs. Mollusks are the second largest group of invertebrates in the world,... More » Pets & Animals Marine Life

Lobsters eat fish, worms, mollusks, other crustaceans, plants, sea urchins and snails. They are omnivores, meaning they consume both plant and animal life. Lobsters prefer to hunt and eat live prey but do scour the ocean... More » Pets & Animals Marine Life

As carnivorous invertebrates, sea anemones have a diet largely consisting of fish, worms and zooplankton. Sea anemones use their venomous tentacles to capture their food, which render their prey immobile. More » Pets & Animals Marine Life