Clownfish and Bubble-Tipped Anemone. Photograph by David Doubilet. Bleached by high water temperatures, this bubble-tipped anemone is largely devoid of the algae that provide color as well as energy from photosynthesis. Though stressed, it will likely survive and continue to serve its clownfish. —Premnas biaculeatus (spine-cheek clownfish); Entacmaea quadricolor; Papua New Guinea
See a photo of a clownfish and bubble-tipped anemone by David Doubilet and download free wallpaper from National Geographic.