shipworm englannista kaikille kielille - Sanakirja.org (englanti-*)

Any of several wormlike marine molluscs (not true worms) of the family Teredinidae that bore through the wooden hulls of ships and other woody material immersed in salt water; specifically, the naval shipworm or turu (Teredo navalis), the type species of the genus Teredo.

Old spars and water-soaked timbers cast on the beach are full of the workings of the shipworm—long cylindrical tunnels penetrating all parts of the wood.
Even though mankind has tried to develop counter measures for thousands of years, still there is no easy solution to the shipworm problem in sight.
In our waters, however, the shipworm seldom attains a length of over a foot-and-a-half long.

Monikko