Cavernous Star Coral

About

Cavernous star coral (Montastraea cavernosa) is one of the most recognizable and ecologically significant corals in the Atlantic, found on reefs from Bermuda down through Brazil and across to West Africa. In the wild it grows across an impressive depth range, turning up everywhere from shallow reef crests to deeper lower slopes where it tends to be most abundant. Colonies take on boulder or dome shapes as they mature, sometimes growing into broad flat plates depending on local light and flow conditions. Up close, the individual corallites are conical and raised above the surface, giving the colony a slightly bumpy, textured look. The septa inside each corallite alternate distinctively between long and short, meeting at a central columella. Coloration is variable. You'll commonly see shades of green, brown, grey, and orange, with green being a particularly common morph in well-lit conditions. In the aquarium this is a solid intermediate-level coral that adapts well to moderate lighting and flow, though it grows slowly and requires stable water quality to really thrive. It is reef safe and generally not aggressive toward neighbors, making it a reasonable choice for a hobbyist who has moved past the basics and wants a substantial, long-lived Atlantic species as a centerpiece.