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This data set contains sensitive biological resource data for native stream and anchialine pool fish species in coastal Hawaii. (Anchialine pools are small, relatively shallow coastal ponds that occur singly or in groups close to the shoreline. They have direct connections to the ocean either through surface channels or through subsurface cracks and fissures in the lava flows, and they experience regular tidal fluctuations in water levels.) Vector points in this data set represent species occurrences at stream mouths and in anchialine pools. Species-specific abundance, seasonality, status, life history, and source information are stored in relational data tables (described below) designed to be used in conjunction with this spatial data layer. This data set comprises a portion of the Environmental Sensitivity Index (ESI) data for Hawaii. ESI data characterize the marine and coastal environments and wildlife by their sensitivity to spilled oil. The ESI data include information for three main components: shoreline habitats, sensitive biological resources, and human-use resources. See also the FISH data layer, part of the larger Hawaii ESI database, for additional fish information.