*Pictures are examples of what the coral looks like*
Bubble corals are cute multi tentacle polyps with similar requirements to hammers and torch corals. It is also a distant relative.
The Bubble Coral is a coral easily found and regularly seen in the aquarium trade. The Plerogyra spp. or “Grape Corals” will inflate and deflate their bubbles (vesicles) depending on how much lighting is available to them. The Plerogyra genus is also found with some branching varieties.