"NT" . . . . . . "Plerogyra sinuosa is a species of \"bubble coral\". It has grape-sized bubbles which increase their surface area according to the amount of light available: they are larger during the day, but smaller during the night, when tentacles reach out to capture food. This species requires low light and a gentle water flow. Common names for Plerogyra sinuosa include \"grape coral\", \"bladder coral\", \"pearl coral\" and \"branching bubble coral\"."@en . . "IUCN3.1" . . . .