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Crabbing and Clamming Dec 4, 2025 Always check for closures at the ODA Shellfish Safety page before harvesting shellfish, which includes clams, crabs and mussels. Announcements Chinese mitten crab found in Willamette River A second confirmed Chinese mitten crab, a prohibited species in Oregon, was found and reported to ODFW on November 17 in the Willamette River near Sellwood Bridge. The first mitten crab was caught on April 22 in the Lower Columbia River. Mitten crabs caused significant infrastructure and ecological damage in and around San Francisco Bay when the population was at its height in the late 1990s and
Features: Gaper clams have large "neck" housing the two siphons that protrude above the substrate surface when feeding. Protective leathery plates are found just below the siphon tips and feel rough to the touch. Gapers are unable to retract their neck entirely into the shell, producing a "gape" in the shell. It is common for algae to grow on their necks and gaper pea crabs to dwell inside the shell with the gaper clam. Habitat: Gapers can be found in high salinity sandy and/or muddy areas in most of Oregon's larger estuaries. Tillamook, Netarts, Yaquina, and Coos are favorite bays