Tim Fitzharris / Green Sea Turtle (Chelonia mydas) and Orange-striped Triggerfish (Balistapus undulatus), Apo Island, Philippines

Tim Fitzharris / Green Sea Turtle (Chelonia mydas) swimming with a school of butterfly fish, Apo Island, Philippines

David Fleetham / Reef fish trapped in hand made fish trap off Apo Island, Philippines.

Alex Mustard / Young Green sea turtle ( Chelonia mydas) resting in leather corals (Sarcophyton sp) Apo Island, Dumaguete, Negros, Philippines. Bohol Sea, Tropical West Pacific Ocean.

Alex Mustard / Yellow lipped sea snake (Laticauda colubrina) dives back down to the reef after surfacing for breath of air. Apo Island, Dumaguete, Negros, Philippines. Bohol Sea, Tropical West Pacific Ocean.

Alex Mustard / Silhouette of Green sea turtle (Chelonia mydas) Apo Island, Dumaguete, Negros, Philippines. Bohol Sea, Tropical West Pacific Ocean.

Tim Fitzharris / Parrotfish (Scaridae) and Sergeant Major Damselfish (Abudefduf saxatilis) school among coral, Apo Island, Philippines

Tim Fitzharris / Anemonefish (Amphiprion sp) and coral, Apo Island, Philippines

Tim Fitzharris / Green Sea Turtle (Chelonia mydas) pair, Apo Island, Philippines

Norbert Wu / Close-up detail of coral colony, Apo Island, Philippines

Norbert Wu / Coral colony, close-up detail, Apo Island, Philippines

Norbert Wu / Coral colonies fighting each other for territory, flinging long mesenterial tentacles, Apo Island, Philippines