What is inside an oyster?

1. Adductor muscle: This is the muscle that opens and closes the oyster's shell. It is located in the center of the oyster's body and is responsible for the oyster's characteristic "squeaky" sound when it is opened.

2. Gills: The gills are responsible for filtering food and oxygen from the water. They are located on either side of the oyster's body and are covered in a thin layer of mucus.

3. Stomach: The stomach is located near the oyster's mouth and is responsible for digesting food. It is a small, sac-like organ that secretes digestive enzymes.

4. Intestine: The intestine is a long, coiled tube that connects the stomach to the anus. It is responsible for absorbing nutrients from food and expelling waste.

5. Heart: The heart is a small, muscular organ that pumps blood throughout the oyster's body. It is located near the oyster's stomach and is responsible for transporting oxygen and nutrients to the oyster's tissues.

6. Gonads: The gonads are responsible for producing eggs and sperm. They are located near the oyster's heart and are responsible for the oyster's reproductive cycle.

7. Mantle: The mantle is a thin, fleshy layer of tissue that covers the oyster's body. It is responsible for secreting the oyster's shell and for protecting the oyster's internal organs.

8. Shell: The shell is the hard, outer covering of the oyster. It is made of calcium carbonate and is secreted by the mantle. The shell protects the oyster's internal organs and provides a home for the oyster to live in.