UFC 4-150-07
19 June 2001
Figure 3-1. Three groups of Marine Borers.1
NOTE: Gribbles are 3mm to 6mm (1/8 to inch) in length; Shipworms are 30 to 60 cm (1 to
2 feet) in length, 12.7mm (1/2 inch) in diameter; and Pholads are 51mm to 63.5mm (2 to 21/2
inches) in length.
1
From OregonStateResearchBulletin48,October1984.
3-5
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