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A pair of percula clown anemonefish (Amphiprion percula) on a bleached anemone. Like corals, sea anemones live in symbiosis with microscopic algae, which gives them their color. And just like corals, anemones will expel their photosynthetic zooxanthellae when stressed by heat or inadequate light. Bleached anemones have cascading consequences for anemonefishes, including decreased fecundity, increased metabolic demand, increased stress hormones, and vulnerability to predators due to behavioural changes. Raja Ampat, Indonesia.