


Moon snails had left numerous sand collars, a strange stiff construction of their eggs, sand and mucus. In the rocks, these channelled dogwinkle were laying eggs. (They're the grain-like things in front of the gray one in the middle.)

Nearby, this polychaete worm was wriggling into a vacant barnacle shell.

And while most anemones were non-descript blobs in the sand, this burrowing anemone spread its tentacles in a pool.

The green comes from single-celled algae that live in the anemone's cells. They have a symbiotic relationship: the algae get a safe place in the sun, and the anemone gets extra oxygen and sugar.
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