The differences between clams, mussels and oysters lie mostly in the shapes of their shells. Many types of clams have the classic clam-shaped shell with ridges or concentric rings. They also come in many colors and sizes, though the ones sold at the fishmonger's are only a few inches long. Razor clams resemble straight razors.Continue Reading
Unlike mussels and oysters, clams don't attach themselves to a hard surface but burrow into the sand. They also eat and obtain oxygen through a syphon.
Mussel shells are slipper shaped and dark colored. They cling in large numbers to rocks and other strata with fibers known as byssus. The byssus, or beard, needs to be scrubbed off before the mussel is cooked. Like clams, mussels can be steamed or boiled.
Oysters also cling to surfaces, but their shells are rougher and more irregular in shape than those of clams or mussels. There are true oysters, which belong to the family Ostreidae, and pearl oysters, which are members of the Pteriidae family. True oysters used to be so plentiful that they were cheap and considered food for the working class. There were huge oyster beds in the harbor of New York City. However, these were destroyed by overfishing and pollution.Learn more about Marine Life
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 separate layers: the uncalcified outer layer called the proteinaceous periosteum, a calcified prismatic layer and a calcified inner layer called nacre.Full Answer >
Examples of benthos include oysters, corals, starfish and clams. Factors such as water temperature, salinity and amount of light drive the composition of benthic communities in a particular area, and they may vary substantially across different geographical regions.Full Answer >
Some different kinds of shellfish include crabs, clams, lobster and oysters. Shellfish is a term for various edible animals that live in water, lack bones and have either calcified shells or tough exoskeletons.Full Answer >
Foods high in iron include chicken or beef liver, mussels, tuna, clams, mollusks, oysters, eggs, beans, tofu and pumpkin seeds. Other foods that are moderately high in iron include canned sardines, beef, turkey, baked potatoes, broccoli and wheat germ.Full Answer >