| health status of harp seals (phoca groenlandica) and hooded seals (cystophora cristata) on sable island, nova scotia, canada, concurrent with their expanding range. | beach surveys for harp (phoca groenlaandica) and hooded (cystophora cristata) seals documented a dramatic increase in their numbers on sable island in mid 1990s. in the 1980s, no more than five animals of both species were observed on this island each year, however, during late 1994 to 1998, 1,191 harp and 870 hooded seals, mostly young animals, were recorded. although some of these seals had been killed by sharks, most (roughly 75%) were found alive or as intact carcasses on the beach, and some ... | 2003 | 12685065 |