Bubble Coral

Plerogyra sinuosa, an LPS coral. Beginner to keep, typical PAR 50–150, low to moderate flow.

A species, not a named morph. It names the animal, not one line of it.

Collector tier: common, reviewed 2026-08.

Names that contain “Bubble Coral” and are not this coral: Pearl Bubble, Bubble Coral Pearl. They are separate corals traded at their own prices, so read the animal rather than the label.

A colonial LPS whose tentacles are modified into oval, grape-sized vesicles that inflate by day and cover the whole skeleton, usually white, cream, tan or green and sometimes yellow or bluish. At night the bubbles contract to show tapered feeding tentacles, and it puts out long sweeper tentacles, three or four inches, that sting anything within reach. Under the bubbles is a skeleton of sharp septa that the vesicles attach to.

How to tell it is the real thing

The bubbles are fragile and puncture easily, so handle it only by the skeleton, never lift it out of the water fully inflated, and place it where the vesicles cannot chafe against rock or take a blast of flow; too much light keeps it partly closed. Give it several inches of clear space: a neighbour damaged on the side facing it is being stung at night. Pearl Bubble is a different genus, Physogyra, with smaller bubbles, and the trade uses grape, pearl and octobubble for both, so read the genus rather than the nickname. A Bubble Tip Anemone is not a coral at all.

Keeping LPS of this kind

Sandbed or low rock with room around it, and it takes food. Bubble Coral is beginner to keep at a typical PAR of 50–150 in low to moderate flow. A typical starting range for this type of coral, not measured on this one.

Full care notes for LPS of this kind

What Bubble Coral goes for

No verified sales yet. A range publishes once 3 dated, checkable records from 3 different sources exist, priced per frag and reported as a median, with what shops ask kept separate from what buyers paid. One frag is a single cut on a plug, whatever its exact size. Colonies, mini colonies and mother stock are excluded rather than averaged in. Nothing on this page is for sale.

Other LPS of this kind in the book