The Bairdi Crab or Tanner Crab (Chionoecetes bairdi), is a species of crab found in the Bering Sea. It is closely related to the Opilio Crab, which also is found in the Bering Sea. Their appearance is similar, and Opilio and Bairdi can be difficult for a person not familiar with the two species to distinguish. Bairdi Crab were largely fished from 1996 to 2006. Restrictions were put in place due to overfishing and when their population nearly died out.
- A volcanic mudflow.