Zooplankton was collected from the Canadian Beaufort Sea shelf in May, (ice on), and July to September (open water) of 1986. In May, four Wisconsin net samples were collected from two stations. In July to September, 89, 88 and 181 net samples were collected with neuston, 85 Ám bongo and 500 Ám bongo gear, respectively, from 49 stations. Neuston gear sampled at the water surface while other gear ... sampled the water column. There were 247 taxonomic identifications from 30 taxonomic groups (phyla, classes, orders or suborders). The resulting database consists of 11091 data rows and is app. 6MB in size. Copepods predominated a total catch of 33.66 million specimens. Wet and dry biomass data by taxonomic group are given for neuston and 500 Ám bongo net samples. Respective maximum wet and dry sample biomass for neuston samples was 44.15 and 5.52 g/100 m3 water filtered, and for bongo samples, 123.72 and 36.00 g/100m3. Length-frequency and sample caloric density data are given respectively, for copepod species captured in 23 samples, and nine samples, from 500 Ám bongo nets.