Peachia is a genus of sea anemone in the family Haloclavidae.

The only part of the animal that is normally visible is the oral disc and tentacles which lie flat on the sand in a star shape.

The "siphonoglyph", a ciliated groove, is elongated and partially separated from the tubular throat, the "actinopharynx".

There is a lobed projection called a "conchula", unique to this genus, at the entrance to the siphonoglyph.

Six of the pairs of mesenteries dividing the internal body cavity are perfect while the other four are imperfect, with powerful retractor muscles.