Figure 3. A. Students constructing traps for deployment at the local marina. B. Deployment of the traps, allowing for vertical colonization profiles of the water column. C. Traps covered with barnacles, sponges, and seaweed. D. Hard wood (alder) colonization by shipworms. Note that the wood is still intact with little depredation. E. Softwood (red cedar) colonization. Note the shipworm pallet protruding from the highly degraded wood. F. Removal of shipworms from softwood substrate. G. Examination of the shipworm burrows in woody substrate.