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Australasian barnacle


up to 10 millimeters in diameter


gray-white to gray




worms, snails, some fish and starfish



  • Dut: Nieuwzeelandse pok (ridderkruispok, sterretje)
  • Lat: Elminius modestus
  • Eng: Australasian barnacle, New Zealand barnacle
  • Ger: Australische Seepocke
Elminius modestus, foto fitis, sytske dijksen

Australasian barnacle

The Australasian barnacle originates from the waters around New Zealand. It is also known by the name New Zealand barnacle. During the Second World War, it was brought unintentionally to Europe on British warships. The animal has four plates, as opposed to the acorn barnacle which has six plates. The plates resemble a symmetric cross. When the Australasian barnacle lives in the same area as the bay barnacle, it displaces the bay barnacle. Australasian barnacles breed throughout the year, although there are peaks in May and October.

  • Distribution and habitat

    Nowadays, the Australasian barnacle is very commonly found along the entire Dutch coast, from the tidal zone down to stones just above the high-tide line. It grows best in sheltered places where the current is not too strong. The Australasian barnacle has no problems living in turbid water.