Tui De Roy / Palm trees and water flowing on beach on Palmyra Atoll, a wet, equatorial atoll with fringing reefs, native forests and abundant seabirds, Palmyra Atoll National Wildlife Refuge, US Line Islands

Sebastian Kennerknecht / Cassin's Auklet (Ptychoramphus aleuticus) researchers, Jennifer Aragon, Michael Johns, and Ilana Nimz, weighing chicks taken from artifical nesting burrows near research station, South Farallon Island...

Sebastian Kennerknecht / Cassin's Auklet (Ptychoramphus aleuticus) researcher, Ilana Nimz, weighing chick taken from artifical nesting burrow near research station, South Farallon Islands, Farallon Islands, Farallon National...

Sebastian Kennerknecht / Common Murre (Uria aalge) breeding colony along coast, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Western Gull (Larus occidentalis) nesting colony near research station, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Western Gull (Larus occidentalis) incubating on nest with research sign stating the nesting pattern of this individual, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, Cal...

Kevin Schafer / Northern Elephant Seal (Mirounga angustirostris) researcher marking large bull, Farallon Islands, California

Norbert Wu / Farallon Islands, 20 miles from San Francisco, supports a large population of Great White Sharks, Farallon Islands, California

Tui De Roy / Palmyra Atoll, a wet, equatorial atoll with fringing reefs, native forests and abundant seabirds, Palmyra Atoll National Wildlife Refuge, US Line Islands

Sebastian Kennerknecht / Western Gull (Larus occidentalis) on nest with eggs, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Common Murre (Uria aalge) breeding colony along coast, South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, California

Sebastian Kennerknecht / Cassin's Auklet (Ptychoramphus aleuticus) artifical nesting burrows on hillside with Western Gulls (Larus occidentalis), South Farallon Islands, Farallon Islands, Farallon National Wildlife Refuge, Ca...