Clams use tiny planktonic (or benthic) diatoms as their main food, and occasionally feed on some phytoplankton, protozoa, invertebrate larvae and organic debris.
Clams, also known as flower clams, are filter-feeding molluscs that rely on their own water pipes to breathe and feed. When the tide is high, the clam will extend the water pipe out of the sand surface, using the opportunity of seawater to pass through the gill pores to achieve the purpose of breathing and feeding; when the tide recedes, the clam will retract the water pipe into the shell. Clams use tiny planktonic (or benthic) diatoms as their main food, and occasionally feed on some phytoplankton, protozoa, invertebrate larvae, and organic debris.
Extended information:
The clam shell is round and slightly triangular in shape, and the inner surface is porcelain white. The origin is Japan, and it is also distributed along the Korean Peninsula, mainland China, and Taiwan. Clams are cultivated on the beaches along the southwest coast of Taiwan. They mostly inhabit the sandy and muddy bottoms of shallow seas, and like to live in areas such as river wetlands and intertidal zones where fresh water is injected. When buying clams, you should choose clams with tightly closed shells. You can knock the clams against each other. Clams with a crisp sound are fresher.
Clam meat is tender and delicious. It is the top-grade shellfish. It contains 10% protein, 1.2% fat, and 2.5% carbohydrate. It also contains various amino acids, vitamins, calcium, and potassium that are easily absorbed by the human body. , magnesium, phosphorus, iron and other essential minerals for the human body. They were used as tributes to the imperial palace in the Tang Dynasty.
Baidu Encyclopedia-Clam