Geoduck

The geoduck (Panopea generosa) is a large, long-lived burrowing clam native to the Pacific coast of northwestern North America. Its small shell cannot contain its long siphon, which remains extended through the seabed.

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Bivalvia: Bivalves are mollusks with two hinged shells and a body adapted for feeding and breathing, often through siphons. Geoducks are bivalves whose paired shells protect a body built around an unusually long siphon.
Suspension feeding: Suspension feeding is the capture of food particles carried in water, often by filtering them through gills. The geoduck draws water through its siphon and filters suspended particles.
Geoduck aquaculture: Geoduck aquaculture is the cultivation of geoducks in managed coastal plots, commonly using protective tubes or nets. Farms raise geoducks in intertidal sediment for commercial harvest.
Ecosystem engineer: An ecosystem engineer is an organism that changes habitat structure and thereby affects other organisms. Geoducks alter sediment locally through burrowing and water movement.
Mollusca: Mollusca is a diverse animal phylum that includes snails, clams, cephalopods, and chitons. The geoduck's body plan and shell place it within this broad animal phylum.
Bivalve gill: A bivalve gill is a respiratory and often feeding organ that exchanges gases and traps food particles from water. Gill surfaces filter food from the water moved through the geoduck's siphon.
Geoduck fishery management: Geoduck fishery management uses rules and monitoring to regulate harvest and conserve geoduck populations. The clam's long life and slow recovery make harvest limits and population estimates consequential.
Benthic ecology: Benthic ecology studies organisms and ecological processes on or within the bottoms of aquatic environments. Geoducks connect sediment-dwelling communities with water-column processes through filtration.
Siphon (mollusc): A molluscan siphon is a tubular structure that moves water into or out of the mantle cavity. The geoduck's long siphon reaches the sediment surface while its body stays buried.
Burrowing: Burrowing is the behavior of digging into or moving through sediment or soil. A muscular foot lets young geoducks burrow; adults remain deeply embedded.