The Christmas tree worm (Spirobranchus giganteus) is a small reef-dwelling marine worm known for its colorful spiral plumes. These plumes function as both gills and feeding structures, allowing the worm to filter food from the surrounding water while anchored deep inside coral.
Christmas tree worms are highly sensitive to nearby movement and changes in water pressure. When a diver or passing fish comes too close, they retract instantly into the safety of their coral tubes. Once the water calms, their spiral plumes slowly re-emerge to feed and breathe — a glimpse of life that’s both delicate and precise.
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Strange Beauty 😍