(photos of Dirk Schories, Germany: specimens from King George Island, Antarctic)
The top view on expanded crown of tentacles (the second photo) is typical and not presents any distinctive characters allowing species identification, however column (the first photo) has brown cuticle and tubercles characteristic for many member of the family Hormathiidae. The identification is confirmed by examining of collected specimens.
Taxonomy:
Phylum Cnidaria
Class Anthozoa
Order Actiniaria