A-Z of Invasive Marine Species: American Oyster Drill
Because of this species of whelk, the UKs native oysters are in decline. As well as feeding on oysters, the mollusc eats mussels and barnacles as well.
A to Z of Invasive Marine Species - Page 3
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The Invasion of the Chinese Mitten Crab
It is thought that they were accidentally introduced to Europe and North America in the sediment found on the bottom of ships ballast tanks.