Pacific geoduck clams (Panopea generosa) are found in the waters of the northeast Pacific from Alaska to Baja California, Mexico. Fisheries for Pacific geoducks occur in Alaska, British Columbia, Washington state and Baja California, Mexico. Geoducks live at depths from the low intertidal zone to more than 100 metres. They are found in beds of soft substrates (sand, mud, gravel and crushed shell) where they burrow into the ocean floor. A developing geoduck digs about a third of a metre per year. After reaching about a metre depth into the substrate, the adult geoduck settles in for a long uneventful life.