| All that one normally sees of the shipworm is the snail-like head peeping out of the bark. |
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| His vessels, rotted by shipworm, were abandoned in Jamaica, where Columbus was marooned for a year. |
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| For example, bacteria living in the intestinal glands of a wood-boring mollusk known as the shipworm provide the animal with as much as one-third of its nitrogen. |
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| In our waters, however, the shipworm seldom attains a length of over a foot-and-a-half long. |
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| The drag from the hull growth cut the speed and the shipworm caused severe hull damage, especially in tropical waters. |
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| 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. |
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| In 1761 the Royal Navy clad the hull of the frigate HMS Alarm with copper sheet to reduce the growth of marine biofouling and prevent attack by the Teredo shipworm. |
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