Description
It isn't Bubble Algae (Valonia)!!! It is a rigid, highly variable green macro algae. It features lightly calcified, rounded, stiff, irregular shaped lobes that have a distinct pattern of intricate veins when examined closely. Its found attached to rocks and rubble in fairly shallow habitats sometimes very close to the shore. Most collected specimens are usually only a few inches in diameter as it can be difficult to extract from the substrate. It is a fairly hardy specimen in the marine aquarium but can take over the rock work.
