OBIS-SEAMAP, Ocean Biodiversity Information System Spatial Ecological Analysis of Megavertebrate Populations, is a spatially referenced online database, aggregating marine mammal, seabird, sea turtle and ray & shark observation data from across the globe. OBIS-SEAMAP, hosted at Marine Geospatial Ecology Lab, Duke University, is aimed at augmenting our understanding of the distribution and the ecology of the target species by quantifying the global patterns of marine species distribution and biodiversity and designing and implementing standard databases and innovative sampling techniques. Started in 2002 by the funding from Alfred P. Sloan Foundation and continued to grow through the past funding from National Science Foundation, National Oceanographic Partnership Program and Naval Postgraduate School, OBIS-SEAMAP has become one of the largest data repository of this kind.