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Marine Animal Encyclopedia

Tetraselmis convolutae Acetabularia acetabulum

Although it can survive free-living, the tiny cells of Tetraselmis convolutae often live inside a worm host (see Green beaches) in a symbiotic relationship. The worm provides them with shelter and a constant environment inside its body. The worm’s light-seeking behavior gives the algae ideal conditions for photosynthesis, which in turn provides both algae and worm with nutrients and energy.

Tetraselmis convolutae habitat mapzoom image
  • Class Prasinophyceae
  • Size 10 micrometers
  • Distribution Northeastern Atlantic, off the western coasts of Britain and France