Clams Animal


If you’ve ever gone to the beach, there’s a good chance you’ve seen clams. Clams are a type of aquatic bivalve mollusk that can be found all over the world. They’re typically smaller than 10 cm in size and can be either fresh or salt water creatures. Clams can also be used for human consumption and are a popular ingredient in many dishes. So next time you’re near the ocean, take a closer look at these fascinating creatures!

Natural History

Clams are relatively simple creatures, but they do have a few interesting adaptations that help them to survive in their habitats. For example, clams have two shells that are hinged so they can open and close. This allows the clam to filter food from the water and protect it from predators. The clam shell is also lined with a layer of mucus that helps to keep the animal moist.

Clam Species

types of clams

There are many different species of clams, and they can be found all over the world. The most common types of clams are described below.

Hard Clam or Northern Quahog (Mercenaria mercenaria)

The hard clam, also known as the Northern quahog, is a type of saltwater clam. It is native to the coasts of North and South America and is one of the most commercially important types of clams. This species is also found in the Atlantic Ocean from Canada to Florida. Hard clams can reach up to 10 cm in size that is larger than soft clams, and can live for up to 30 years. Hard-shell clams are typically sold alive, while soft-shell clams are often sold shucked (without their shells).

Soft-Shell Clam (Mya arenaria)

The soft-shell clam is a saltwater clam found in Europe, North America, and Asia. It is one of the most commercially important types of clams. Soft-shell clams are often used in dishes such as clam chowder.

Razor Clam (Siliqua patula)

types of edible clams

The razor clam is found in both the Pacific and Arctic oceans. It gets its name from its long, thin shape resembling a razor. Razor clams can reach up to 20 cm in length and live for up to 8 years.

Cockles (Cerastoderma edule)

Cockles are a type of saltwater clam that is found in Europe and North America. They are small clams, only reaching about 5 cm in size. Cockles are often used as bait but can also be eaten.

Mussels (Mytilus edulis)

Mussels are a type of saltwater clam that is found in Europe, North America, and Australia. They are a popular type of seafood and are often used in dishes such as mussels in white wine sauce. Mussels can reach up to 20 cm in length, and live for up to 50 years.

What Type of Animal Is a Clam?

short neck clam

Clams are bivalve mollusks that reside in the seas and bays of various countries.

A clam is a type of shellfish that is found in both fresh and salt water. These animals have a hard shell that they use to protect themselves from predators and the elements.

Where Does a Clam Live?

The amazing, little-known creatures, clams, live in freshwater habitats and can be found in large streams and rivers. They can be found living free on sea floors or burrowing into soft substrates to varying depths.

How Long Does a Clam Live?

The lifespan of a clam can vary depending on the variety, with some having lifespans up to 500 years in salt water. However, freshwater clams only live 6 months, and hard clams have a lifespan of 40 years, while soft shell clams may live for 10-12 years or more!

What Do Clams Eat?

Clams are filter feeders, meaning that they strain food particles from the water around them using their gills. This makes them an important part of the ocean’s food chain.

Clams eat a variety of things, including algae, plankton, and other organic matter. They also eat small fish and crustaceans. Clams use their siphons to suck in food from the water and then filter out the nutrients.  

Predators of Clams

clams without shell

Predators of clams include organisms like oyster drills, moon snails, skates, pufferfish, and whelks. These animals prey on clams by biting into their shells or sucking out their flesh. Clams have evolved various ways to protect themselves from predators, including closing their shells tightly and releasing a cloud of ink.


Clams are hermaphrodites, meaning that they have both male and female reproductive organs. However, they cannot self-fertilize and must mate with another individual to produce offspring. After mating, the male clam will release its sperm into the water.

Female clams attract male gametes (sperm) into their bodies via their siphons so that they may be fertilized. Clams may produce between one and five million eggs, which will eventually develop into larvae. The larvae develop hard shells after metamorphosing and growing. Tiny clams attach to the sand or mud using burrowing feet.

Can a Clam Move?

The clams use a powerful burrowing foot to move around on the bottom of oceans and estuaries. To squirt water from the shell and close its open valves, it contracts the foot and activates two adductor muscles. The clam has no control over the speed or direction but relies on the ocean waves and currents to transport it at high speed.

Are They Edible?

what do clams look like

Yes, clams are edible. Clams are popular seafood items and are harvested both for recreational and commercial purposes. Clams can be eaten raw, steamed, baked, or fried. They are often used in soups, stews, in making of clam chowders, and pasta dishes.

Clams are nutritious and are a good source of protein, iron, and vitamin B12. They also contain omega-3 fatty acids, which are beneficial for heart health.

Razor clams, a species native to the Pacific Ocean, have fragile shells and are almost completely edible. Littleneck clams, the smallest clam specie, can be eaten raw or cooked.

Would They Make a Good Pet?

While not as common as other types of pets, clams can make interesting and low-maintenance companions. They are often kept in aquariums and do not need to be fed frequently. It is important to provide them with a clean environment, as they are sensitive to water quality.

Clams are kept to produce pearls by hobbyists and on aquaculture farms. Freshwater clams, such as Asian gold clams, make excellent pets for aquariums and can be purchased at pet stores.

Do Clams Produce Pearls?

different types of clams

Yes, clams produce pearls when an irritant, such as a piece of sand becomes lodged in the shell. The clam will secrete a substance called nacre to coat the irritant and protect itself. This process can take many years and results in a pearl.

Some people think that pearls are only found in oysters, but there is a chance for them to form when clams grow, and mollusk shells become smooth. Clam pearls come in a variety of hues, including white and pink. Clam pearls from the wild are more prevalent than aquaculture clam pearls.

Clam Conservation

The giant clam is a beautiful and unusual endangered species that has been suffering from decline. Nine species of giant clams are protected by CITES Appendix II but still declining in their marine habitats due to human interference such as aquarium trade, aquaculture (farming), extensive food collection, etc.

A sanctuary called Back River Reef Sanctuary located in this area keeps natural predators away, while commercial fishing isn’t allowed because it would prey heavily upon hard clams.

top neck clams

However, clams are also a valuable resource and should be harvested responsibly. Over-harvesting can damage the clam population and disrupt the delicate balance of the ecosystem. It is important to remember to only harvest what you need and to leave some clams for future generations. Clam conservation is important for ensuring the health of this valuable resource.

 Final Thoughts

Clams are interesting creatures that play an important role in the ecosystem by filtering food and water.

If you find yourself near a body of water, keep your eyes peeled for these interesting creatures. Clams are an important part of the ecosystem and are a delicious addition to many meals!

Cody Mitchell
Cody Mitchell is a pet lover and a passionate pet writer. He has worked as a professional writer for over 6 years, with a focus on creating compelling content for pet-related brands. His work has been featured in major publications. When he's not writing, Cody can be found playing with his two dogs (a labradoodle and a cocker spaniel) or cuddling his cat.

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