Zooplankton serve as vital components to the marine food web, and their distributions implement limits on population growth for organisms of both higher and lower trophic levels. Many zooplankton species, such as Calanoid and Cyclopoid copepods, are the primary food source for the juvenile fishes that are part of the fisheries within the temperate coastal Northeast Pacific, including Chinook, Chum, Pink, and Coho salmon. A better understanding of the environmental parameters that influence zooplankton abundance and distribution is essential for the proper management of these economic and culturally valuable fisheries. This study investigates the correlation between the abundance and distribution of Oithona, other small copepods (<2mm), large copepods (>2mm), euphausiids, hyperiids, gammarids, ostracods, chaetognaths, and larvaceans to dissolved oxygen, salinity, and chlorophyll conditions to determine which parameters have the greatest impact on zooplankton distribution. The ultimate goal of this study is to generate a model to predict the distribution of zooplankton populations under different environmental conditions. It was expected that distribution would favor higher dissolved oxygen, more saline, and high chlorophyll conditions. Samples were collected in Nootka Sound, British Columbia, onboard the R/V Thomas G. Thompson during the Oceanography Senior Thesis Cruise at 4 stations using 211-micron closing net. Four samples were collected at each station from 100-75m, 75-50m, 50-25m, 25-0m depth ranges to observe vertical distribution within the upper 100m of the water column. Results identified significant correlation between dissolved oxygen and salinity and zooplankton abundance and distribution. However, abundance appeared to be greater at stations and depths with lower dissolved oxygen and salinity concentrations. We also tested an alternative method of measuring zooplankton abundance and distribution by constructing an underwater video profiler (UVP), designed to capture imaging data of zooplankton at 15m depths, and used video analysis software to quantify this data.