Tiny hairs that help corals breathe may malfunction in warming oceans
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Corals get daytime oxygen from symbiotic algae in their tissues; at night they depend on surrounding water. Hairlike cilia on the colony surface, unknown to science before 2014, generate fast vortices that circulate oxygen to outer tissues and help clear sediment. A May 2026 Science study examines how animals with no brain or musculoskeletal system regulate this, and what happens as waters warm.
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