Genus
Common name: Sand Dollar
Scientific name: Dendraster
Dendraster is a genus of sand dollars, a type of burrowing sea urchin found in the Pacific Ocean. These echinoids are known for their distinctive flat, star-shaped pattern and are often found in sandy or muddy substrates. In the aquarium, they can serve as natural detritivores, consuming organic material and aerating the substrate. They are sensitive to water quality and require stable conditions with low nitrate levels. Sand dollars are fascinating to observe but should be kept by experienced aquarists who can meet their specific care requirements.