SWFSC Marine Mammal Survey in the Eastern Tropical Pacific (1467)

This 1992 line-transect survey was designed to make abundance
estimates of the central stock of common dolphin, Delphinus delphis, in the
eastern Pacific. This stock of dolphin is taken in the tropical tuna fishery
and has suffered a substantial decline. Previous surveys covering larger areas
have permitted estimates of abundance, but with low precision. This survey was
conducted by the NOAA Southwest Fisheries Science Center aboard NOAA Ships
David Starr Jordan and McArthur for a combined total of approximately 32,000
kilometers surveyed from late July to early November 1992. This dataset
provides the time-date and geographical coordinates, by species/stock, of all
cetaceans detected during the survey, as well as the daily and intra-daily
start and end points of the line-transect survey.