Limnoria pfefferi

Limnoria pfefferi is a species of marine crustacean belonging to the genus Limnoria, which are commonly known as gribbles. These isopods are wood-boring organisms that feed on algae and driftwood.1

Limnoria pfefferi is found in the Pacific and Indian Oceans. Other species within the Limnoria genus, such as Limnoria lignorum and Limnoria tripunctata, also exist and can even bore into wood treated with creosote. Gribbles typically grow to about 5 mm in length and burrow into wood. They can sometimes damage the nonwoody insulation of submarine cables.1