Bubble Coral (Ultra) SPS They occasionally retract all polyps

They occasionally retract all polyps and develop a waxy sheet over the surface which makes them look wet underwater

which can attempt to be differentiated by the ridges patterns

It will open its polyps with reduced lighting or when it detects food in the water

Cyphastrea is a type of moon coral with small polyps and obvious tentacles that extend like a star or flower around its mouth

Both have identical care needs and make terrific additions to almost any reef

Bubble Coral (Ultra) SPS They occasionally retract all polypsThis coral receives most of its energy by utilizing the photosynthetic algae contained within its tissues. At night time it will retract the bubbles and extend its feeding tentacles, and will benefit from meaty foods such as mysis shrimp, enriched brine shrimp, oyster eggs, pellets, etc. It can alter the size of its bubbles to expose its symbiotic algae to more or less light, however like all corals sudden changes in light intensity should be avoided.