Keywords: FMIB 52994 Hydra.jpeg Hydra Subject Hydra Tag Invertebrates 1890 Cite book Corals and Coral Islands Dana James D New York Dodd Mead and Company 1890 101 Creator James Dwight Dana PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 52994 Images from the Freshwater and Marine Image Bank to check James Dwight Dana Hydra genus |