(photos of Dirk Schories, specimens from Southern Chile (Puerto Montt), SE Pacific)
Millions of these small sea anemones form dense populations in the intertidal of Southern Chile mud flats and some other habitats. This is a photosynthetic species, it has numerous symbiotic zooxanthellae in its tissues.
Taxonomy:
Phylum Cnidaria
Class Anthozoa
Order Actiniaria