Juergen Freund / Dugong (Dugong dugon) in the seagrass bed shadowed by a trevally. Dimakya Island, Palawan, Philippines

Juergen Freund / Dugong (Dugong dugon) surfacing to take a breath of air. Dimakya Island, Palawan, Philippines.

Juergen Freund / Diver watching a swimming Dugong (Dugong dugon). Dimakya Island, Palawan, Philippines, April 2010.

Juergen Freund / Dugong (Dugong dugon) feeding in the seagrass bed with trevally fish inspecting the disturbed sand. Dimakya Island, Palawan, Philippines

Doug Perrine / Dugong / Sea cow {Dugong dugong} underwater, Indo pacific

Doug Perrine / Dugong {Dugong dugong} feeding on sea grass, Indo-Pacific

Mike Parry / Dugong (Dugong dugon), Lamen Bay, Epi Island, Vanuatu

Juergen Freund / Dugong foraging on seabed. Indo-Pacific

Juergen Freund / Dugong grazing on sea grass {Dugong dugon} Indo Pacific

Juergen Freund / Dugong grazing on sea grass {Dugong dugon} Indo Pacific

Juergen Freund / Dugong (Dugong dugon) surfacing to take a breath of air. Dimakya Island, Palawan, Philippines, April 2010, endangered species.

Juergen Freund / Dugong (Dugong dugon) surfacing to take a breath of air. Dimakya Island, Palawan, Philippines, April 2010, Endangered species.

Juergen Freund / Split level view of seagrass beds and Tetepare island, the largest uninhabited island in the South Pacific, Solomon Islands, July 2010, Seagrass beds of Tetepare Island attracts dugong who feed here r...

Juergen Freund / Dugong (Dugong dugon) feeding in the seagrass bed shadowed by a trevally. Dimakya Island, Palawan, Philippines.

Juergen Freund / Dugong (Dugong dugon) feeding in the seagrass bed shadowed by a trevally. Dimakya Island, Palawan, Philippines.

Juergen Freund / Dugong (Dugong dugon) feeding in the seagrass bed shadowed by a trevally. Dimakya Island, Palawan, Philippines.

Juergen Freund / Dugong (Dugong dugon) feeding in the seagrass bed shadowed by a trevally. Dimakya Island, Palawan, Philippines.

Juergen Freund / Dugong (Dugong dugon) feeding in the seagrass bed shadowed by a trevally. Dimakya Island, Palawan, Philippines.

Juergen Freund / Dugong (Dugong dugon) feeding in the seagrass bed shadowed by a trevally. Dimakya Island, Palawan, Philippines.

Juergen Freund / Dugong (Dugong dugon) feeding in the seagrass bed shadowed by a trevally. Dimakya Island, Palawan, Philippines.

Juergen Freund / Oval seagrass (Halophila ovalis) food for the endangered Dugong, Palawan, Philippines, Indo-pacific.

Mike Parry / Dugong (Dugong dugon) feeding on sea grass, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) returning to surface after resting on the sandy sea floor, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) swimming over coral reef, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) photographer reaches out and touches a curious Dugong, Lamen Bay, Epi Island, Vanuatu

Juergen Freund / Neckbone of Dugong (Dugong dugong) used in Palau as bracelet for clan chiefs, Palau, Micronesia

GEORGETTE DOUWMA / Juvenile Dugong {Dugong dugong} caught in fish trap, Sulawesi, Monado, Indonesia

Doug Perrine / Dugong / Sea cow {Dugong dugong} rolling underwater, possibly trying to dislodge Remora fish {Echeneis naucrates} Indo-pacific

Doug Perrine / Dugong / Sea cow {Dugong dugong} rear view showing skin wounds, Indo pacific

Doug Perrine / Dugong / Sea cow {Dugong dugong} breathing at water surface, Indo pacific

Doug Perrine / Dugong {Dugong dugong} Indo-Pacific

Juergen Freund / Dugong grazing on seagrass {Dugong dugong} Sulu-sulawesi seas, Indo-pacific

Mike Parry / Dugong (Dugong dugon) surfacing to breathe, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) feeding on sea grass, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) feeding on sea grass, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) feeding on sea grass, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) feeding on sea grass, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) returning to surface after sleeping/resting on the sandy sea floor, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) full body portrait, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) swimming, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) portrait, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) portrait, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) surrounded by snorkelers, Lamen Bay, Epi Island, Vanuatu

Mike Parry / Dugong (Dugong dugon) swimming at water surface, Lamen Bay, Epi Island, Vanuatu

Juergen Freund / Looking up at Dugong surfacing for air {Dugong dugon} Indo Pacific

Doug Perrine / Dugong with remoras and golden pilot jack fish {Dugong dugong} Australia (Non-ex).

Doug Perrine / Dugong with attendant remora fish {Dugong dugong} Indo-Pacific (Non-ex).

Doug Perrine / Dugong grazing on sea grass {Dugong dugong} Western Australia (Non-ex).

Doug Perrine / Dugong surfacing to breathe {Dugong dugong} Indo Pacific (Non-ex).

Doug Perrine / Dugong with calf {Dugong dugong} Australia (Non-ex).

Doug Perrine / Dugong swimming {Dugong dugong} Indo-Pacific (Non-ex).

Doug Perrine / Dugong underwater {Dugong dugong} Indo-Pacific (Non-ex).

Doug Perrine / Dugong with Golden pilot jacks {Dugong dugong} Australia (Non-ex).

Juergen Freund / Dugong foraging on seabed. Indo-Pacific

Juergen Freund / Dugong swimming {Dugong dugon} Indo Pacific

Juergen Freund / Dugong grazing on seagrass, {Dugong dugon} Indo Pacific

Juergen Freund / Dugong grazing on sea grass {Dugong dugon} Indo Pacific

Juergen Freund / Dugong surfacing for air {Dugong dugon} Indo Pacific

Juergen Freund / Dugong grazing on sea grass {Dugong dugon} Indo Pacific

Juergen Freund / Dugong grazing on sea grass {Dugong dugon} Indo Pacific

Juergen Freund / Dugong grazing on sea grass, rear view {Dugong dugon} Indo Pacific

Juergen Freund / Dugong grazing on sea grass {Dugong dugon} Indo Pacific

Juergen Freund / Dugong grazing on sea grass {Dugong dugon} Indo Pacific

Juergen Freund / Dugong swimming underwater {Dugong dugon} Indo Pacific

Juergen Freund / Dugong descends after surfacing for air {Dugong dugon} Indo Pacific

Juergen Freund / Dugong descends after surfacing for air {Dugong dugon} Indo Pacific

Juergen Freund / Dugong grazing on seagrass {Dugong dugon} Indo Pacific

Paul D Stewart / Illustration of Steller's Sea Cow (Hydrodamalis gigas) from 'Naturhistoriche Abbinldungen der Saeugethiere' by Heinrich Rudolph Schinz. later edition circa 1841. Fine contemporary coloured lithograph...

Julian Hume / Illustration of nesting seabirds and other species,Ile Fregate,Rodrigues. Dugongs (Dugong dugon) (endangered/threatened species) once thrived in lagoons on Ile Fregate,while seabirds breed in huge num...

Peter Scoones / Dugong mother calf {Dugong dugong} seagrass meadow Shark Bay W Australia

Juergen Freund / Indo-Pacific Dugong {Dugong dugong} underwater Indo-Pacific NB scars on back

Steven David Miller / Adult Dugong surfacing to breath {Dugong dugong} Shark Bay Western Australia