Rick M. Harbo

• Field Guide to Seashells and Shellfish of the Pacific Northwest
• Guide to the Western seashore
• Pacific Reef & Shore
• Shells and Shellfish of the Pacific Northwest
• Tidepool & reef
• Whelks to Whales
• Field Guide to Marine Life of the Outer Coasts of the Salish Sea and Beyond
• Field Guide to Marine Life of the Protected Waters of the Salish Sea
• Field Guide to Nudibranchs of the Pacific Northwest
• Pacific reef and shore
• Whelks to whales