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Bladder coral, pearl coral or branching bubble coral Plerogyra sinuosa on the coral reef in Thailand #232966723
Description
Bladder coral, pearl coral or branching bubble coral Plerogyra sinuosa. Plerogyra sinuosa is a jelly-like species of the phylum Cnidaria. It is commonly called `bubble coral` due to its bubbly appearance. Scuba diving the coral reef of Thailand. The `bubbles` are grape-sized 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.