A1 Saturday and Sunday, or Friday evening until Sunday night; the part of the week in which many people living in the West do not go to work: This/Next weekend we're going to see some friends. I have a lot of homework to do over the weekend. He spent the weekend fishing with his brother.
clams, mussels, oysters, and scallops (class Bivalvia) 1  ark shell (family Arcidae) 2  cockles (family Cardiidae) 3  coquina clam (genus Donax) 4  gaper clams (Tresus nuttallii and Tresus capax) 5  geoduck (Panopea generosa) 6  jingle shells (family Anomiidae) 7  mussels (families Mytilidae and Unionidae) zebra mussel (genus Dreissena) 8  genus Nuculana.
M aybe you think that snails, clams, mussels, squid, and octopods are very different. Yet, they are all in the same category of animals known as mollusks and are structurally similar. Mollusks are some of the most well known of invertebrate sea creatures (there are over 50,000 species).Some are very rare and are only found in very deep-water. Mollusks have three body regions. aybe you think that snails, clams, mussels, squid, and octopods are very different. Yet, they are all in the same category of animals known as mollusks and are structurally similar. Mollusks are some of the most well known of invertebrate sea creatures (there are over 50,000 species).