Alex Mustard / Dugong (Dugong dugon) male and juvenile Golden trevally (Gnathanodon speciosus) swimming over Seagrass (Halophila stipulacea) meadow. Marsa Nabaa, Marsa Alam, Egypt.

Doug Perrine / Dugong or Sea cow (Dugong dugon) split level view, Calauit Island, off Busuanga, Calamian Islands, Palawan, Philippines.

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

Doug Perrine / Dugong or Sea cow (Dugong dugon) feeding on seagrass with commensal juvenile Golden trevally (Gnathanodon speciosus) Calauit Island, off Busuanga, Calamian Islands, Palawan, Philippines.

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