Oyster spat, or baby oysters, are ready to be planted by oyster gardeners in the Navesink River Reef, part of the Hudson-Raritan Estuary system.

Photograph courtesy New York/New Jersey Baykeeper
    1. Read through the Fast Facts first!

       

      What is a group of oysters called?

      A group of oysters is called a colony, bed, or reef.

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

      The biggest oysters can be over 31 centimeters (up to 12.5 inches) long.

    3. What is oyster spat?

      "Spat" is what young oysters are called.

    • 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.