1. Read through the Fast Facts first!


    What is a group of oysters called?

  2. The oysters in the photograph are about 3.81 centimeters (1.5 inches) long. How long are the biggest oysters?

  3. What is oyster spat?

  • A group of oysters is called a colony, bed, or reef.
  • Oysters can grow up to 35.6 centimeters (14 inches) long.
  • In captivity, oysters have an average lifespan of up to 20 years.
  • Oysters are very sensitive to water quality. Oyster populations in many areas are disappearing due to coastal pollution.