2. What are shellfish and seafood?

3. How to make shellfish delicious?

4. What pictures of shellfish and seafood are there?

1. Shellfish is a big class of mollusks, including many species, such as Hong Bei, salamander, conch, snail, sharp snail, meretrix meretrix, scallop, sea melon seed, green clam, hairy clam and so on.

This animal has some basic characteristics, such as body symmetry, true body cavity and so on.

They have certain characteristics, but they are not exactly the same.

4. Different varieties may have differences in appearance, body shape and living habits.