Bivalves
Bivalves are the second largest group of mollusks. Bivalves include clams, scallops, and oysters. There are over 9,200 living species, and still more to be identified! Bivalves do not have a radula. They have one shell with two parts called valves which make up Bivalves. Each half of their shell is asymmetrical, which means that they do not have symmetry. Bivalves bury themselves in the ocean floor. To move the animals use their muscular foot. Clams have it easy when it comes to food. The water enters them through their siphons (SY fuhnz). Siphons are the round openings in the muscular cavity in the bivalves "mouth". When the water reaches the animal's gills, the gills capture the oxygen from the water, and they capture food. The clams eat plankton which is a mass of very small organisms.
Fun Fact: Female oysters can produce about 500 million eggs a year! -er
Fun Fact: Female oysters can produce about 500 million eggs a year! -er