The column, external structure of an anemone visible when the animal is closed, is gray in color and dotted with sticky whitish "warts".

The sea anemone, being member of the Hexacorallia, usually carries a number of tentacles multiple of six and they are positioned in concentric circles.

The sebae anemone is widespread throughout the tropical and subtropical waters of the Indo-Pacific area from the eastern coasts of Africa, Red Sea included, to Polynesia and from south Japan to Australia and New-Caledonia.

[3] This sea anemone prefers hard base substrates slightly covered with sand but it can also cling to branching corals from the surface to 40 meters deep.

Its reproduction can be sexual by simultaneous transmission of male and female gametes in the water or asexual by scissiparity;[3] the anemone divides itself into two separate individuals from the foot or the mouth.