Gersemia rubiformis, commonly known as the sea strawberry, is a species of soft coral in the family Nephtheidae.

Juvenile basket stars (Gorgonocephalus eucnemis) are often found clinging to the coral and hiding in the interstices.

The white sea anemone Metridium senile often grows nearby and the rock scallop (Crassadoma gigantea) shares the same habitat in California.

[4] In Puget Sound, juvenile basket stars (Gorgonocephalus eucnemis) have been found to be living, growing and feeding inside the pharynges of Gersemia rubiformis polyps, only becoming free-living when they have grown large enough to catch food for themselves.

[5] Researchers in British Columbia found that extracts of Gersemia rubiformis showed antimicrobial activity when tested in vitro.