I photographed these Spinecheek Clownfish, (Premnas biaculeatus) in this very unusual bleached white Bulb Tentacle Sea-Anemone, (Entacmaea quadricolor) in Milne Bay, Papua New Guinea.
During a short spell of unusually higher than normal water temperature, a few anemones and corals began to expell the symbiotic algae or zooxanthellae that live within them in a process know as "Bleaching". Over a period of a few days, the anemones changed from a dark brown hue to pale white in color. This dramatic change in color only lasted two days.
What really attracted me to this anemone in particular was the sharp contrast of color between the brilliant red Spinecheek Clownfish and the pale white tentacles of the Anemone.
All clownfish or anemonefish live in close association with anemones. Anemonefish mature as males with all females being sex-reversed males, sex and growth is determined by the presence of a dominant female. In the absence of a female, the largest male will change into a female and the largest juvenile will rapidly mature into a male.