Halimida is a generic name for several different species in the Genus Halimida sp. They are a calcareous algae found through out the shallow waters of South Florida and the Caribbean. There are two main growth patterns, a clump style and a rooted style, and among the rooted ones there are several different species. They also are called the Money Plant. We try to stock and sell the types that are in the picture, but at different times of the year different species look better than other types so we try to get the best type for the time of the year. They are a lot like the other “rooted” plants we sell in that they go through growth and die off cycles, but the “root ball” will usually continue to send up new shoots after the previous plant part dies off. The segments are calcareous and when they fall to the bottom they look like oatmeal. They do require a sufficient level of calcium to really strive and grow. These are great for your main reef tank or in your refugium. The average height is anywhere from 2 to 5 inches.