Juergen Freund / Tubbataha Reef ranger station in a storm with a full arch rainbow against the dark clouds. Tubbataha Reef National Marine Park, Palawan, Philippines, April 2009.

Toby Roxburgh / Scientists from the Welsh Marine Environmental Monitoring team and ranger from Kenfig Nature Reserve looking at the carcass of Sowerby's Beaked Whale (Mesoplodon bidens), washed up on the coast near P...

Toby Roxburgh / Scientist from the Welsh Marine Environmental Monitoring team and ranger from Kenfig Nature Reserve looking at the carcass of a Sowerby's Beaked Whale (Mesoplodon bidens), washed up on the coast near...

Flip Nicklin / Bottlenose Dolphin (Tursiops truncatus) that interact with tourists with park ranger, Monkey Mia, Australia

Pete Oxford / Marine Iguana (Amblyrhynchus cristatus) with tourists, vulnerable, Fernandina Island, Galapagos Islands, Ecuador

Gerry Ellis / Green Sea Turtle (Chelonia mydas) eggs being retrieved by ranger in preparation for incubation, South Pacific

Roberto Rinaldi / Park ranger assisting female green turtle (Chelonia mydas) laying eggs on the beach, Heron Island, Australia.

Roberto Rinaldi / Ranger station in the marine reserve on Tubbataha reef, Philippines.