Orange Sun Coral (Tubastraea faulkneri/coccinea)
A variant of Sun coral (Tubastraea sp.)

Representative Sun coralphoto — a dedicated image of this exact morph isn't available yet.
The iconic bright-orange sun coral with a deep-orange corallite skeleton and matching tentacles; the most-traded Tubastraea.
Keeper tips for this variant
It is azooxanthellate (non-photosynthetic) — you MUST target-feed every polyp meaty food 3-5x/week or it slowly starves; that feeding burden, not light, is why it's an advanced coral.