Adrian Davies / Shipworm (Teredo sp) signs as holes in piece of wood on beach. Shetland, Scotland, UK. June.
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Joel Sartore / Photo Ark / Two Wedge-shaped martesias (Martesia cuneiformis), a wood-boring mollusk, on white background, Gulf Specimen Marine Lab and Aquarium.
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Joel Sartore / Photo Ark / Two Wedge-shaped martesias (Martesia cuneiformis) on black background, Gulf Specimen Marine Lab and Aquarium.
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Joel Sartore / Photo Ark / Two Wedge-shaped martesias (Martesia cuneiformis) on black background, Gulf Specimen Marine Lab and Aquarium.
