Sand dollars distribution pattern and abundance at the coast of Cemara Kecil Island,Karimunjawa,Jepara,Indonesia

This research is aimed to know the distribution patterns and abundance of sand dollars [clypeaster subdepressus (gray,1840)] at different spatial distances from the coast of cemara kecil island karimunjawa,indonesia. the data were collected using purposive sampling and analyzed using cluster analysis past-3. the results indicate that the abundance of sand dollar amounts to 2 200 individuals,and the existing species are laganum centrale,l. laganum,l. fudsiyama,l. depressum,l. retinens,l. boschi,l. depressum tonganense,l dickersoni,l. decagonale rectum,l. joubini and l. decagonale. the cluster analysis using past-3 reveals that there are clumped distributions and uniform distributions of l. centrale and laganum laganum. at a distance of 23 m to 38 m from the coastline the animals form clumped distributions. © 2016 penerbit utm press. all rights reserved.