Cup Coral

About

Cup coral (Turbinaria mesenterina) is one of those species that can genuinely make you do a double take, because the same coral looks completely different depending on where it grows. In shallower, brighter water it tends to form upright or tiered plates, while in deeper or more turbid conditions the colony spreads into broad, nearly horizontal sheets. In subtidal zones with shifting light, the skeleton becomes tightly folded and contorted, which is where the common names like scroll coral and folded lettuce coral come from. Colonies are typically grey-green to grey-brown, and the small, tightly packed corallites average around 2.5 millimetres across. Across the Indo-Pacific, this species can genuinely dominate in shallow, murky environments where many other corals struggle, which tells you something useful about its tolerance for lower light. That same adaptability carries over into the aquarium. It handles reduced lighting better than many large polyp stony corals and appreciates moderate flow rather than the intense surge that some SPS corals demand. It sits firmly in intermediate territory care-wise. Not a beginner coral, but not one that requires the obsessive fine-tuning of more demanding stony species either. Give it stable water quality and room to develop its distinctive layered form and it tends to reward patience.