Ebb is an ecologist with expertise in aquatic conservation. His primary interest is at the interface between society and aquatic fauna in freshwater and near shore marine ecosystems. He champions the application of direct observation and remote video for studying freshwater fishes and this has led to new insights into behaviour of rare and threatened species. This exploration has led to detection of species not previously known to occupy Australian waters and the conservation listing of species. Ebb provides key input to regional, state and national conservation planning in tropical Australia.