There are a few great ID books that are very helpful when looking up interesting life photographed on dives.  The three main books I refer to often are:

  • Marine Life of the Pacific Northwest: A Photographic Encyclopedia of Invertebrates, Seaweeds and Selected Fishes by Andy Lamb, and Bernard Hanby. Madeira Park: Harbour Publishing, 2005.  An updated online version is also available to subscribers at
  • Beneath Pacific Tides: Subtidal Invertebrates of the West Coast by Gregory C. Jensen, Daniel W. Gotshall, Rebecca E. Flores Miller. Bremerton: MolaMarine, 2018
  • Crabs and Shrimps of the Pacific Coast: A Guide to Shallow-Water Decapods from Southeastern Alaska to the Mexican Border by Gregory C. Jensen. Bremerton: MolaMarine, 2014

Other books that I refer to and have been helpful over the years are listed below.

Paul Humann with Photographers Howard Hall and Neil McDaniel.  Coastal Fish Identification: California to Alaska.  Jacksonville: New World Publications, Inc., 1996.

Andy Lamb, and Phil Edgell.  Coastal Fishes of the Pacific Northwest.  Madeira Park: Harbour Publishing, 1986.

Daniel Gotshall.  Guide to Marine Invertebrates: Alaska to Baja California.  Monterey: Sea Challengers, 1994.

David W. Behrens.  Pacific Coast Nudibranchs: A Guide to the Opisthobranchs Alaska to Baja California.  Monterey: Sea Challengers, 1991.

David Wrobel, and  Claudia Mills.  Pacific Coast Pelagic Invertebrates: A Guide to the Common Gelatinous Animals.  Monterey: Sea Challengers, 1998.