Alex Mustard / Red and black anemonefish (Amphiprion melanopus) in a Bulb tentacle sea anemone (Entacmaea quadricolor). Kri Island, Raja Ampat, West Papua, Indonesia, South East Asia. Dampier Strait, Tropical West P...

Albert Lleal / Diatom (Amphora sp) SEM close-up view of fossil at 3500x magnification, approximately 2000 years old, found in lake near Huesca, Spain

Gary Bell/ Oceanwide / Clark's Anemonefish (Amphiprion clarkii) juvenile in sea anemone, Papua New Guinea

David Fleetham / Black anemonefish (Amphiprion melanopus) in anemone, Philippines.

David Fleetham / Red and black anemonefish (Amphiprion melanopus) close to host anemone. Philippines.

Alex Mustard / Red saddleback anemonefish (Amphiprion ephippium) in its host anemone, with soft corals behind. This species of anemonefish is endemic to the Andaman Sea. Richelieu Rock, Thailand. Andaman Sea, India...

Alex Mustard / Andaman anemone fishes (Amphiprion ephippium) hovering above a sea anemone on a coral reef in Thailand. Richelieu Rock, Andaman Sea, Indian Ocean.

Alex Mustard / Red saddleback anemonefish (Amphiprion ephippium) in its host anemone. East of Eden, Similan Islands, Thailand. Andaman Sea, Indian Ocean. Endemic to Andaman Sea.

Constantinos Petrinos / Clark's anemonefish (Amphiprion clarkii) on black background Lembeh Strait, North Sulawesi, Indonesia. Composite image.

Constantinos Petrinos / Clark's anemonefish (Amphiprion clarkii) portrait with dark black background. Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Clark's anemonefish (Amphiprion clarkii) portrait with dark black background. Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Red and Black Anemonefish (Amphiprion melanopus) with bleached host anemone. The tentacles of the anemone are usually a dull brown, but this anemone is bleached and has lost most of its endosymbiotic...