John Nathan Cobb the preeminent fishery scientist of the Pacific Northwest for nearly 40 years. Thompson had offices in the College of Fisheries where, since 1925, he was Director of the International Fisheries Commission (now International Pacific Halibut Commission) charged with the management of, and research on, the Pacific halibut, "Hippoglossus stenolepis", fishery. A Ph.D. from Stanford University, Thompson was appointed Research Professor and Director of the new department on a part-time basis, as he remained Director of the International Fisheries Commission. He remained Director of the School until 1947 when he resigned to establish and head the UW's new Fisheries Research Institute.
Pelagic fish ocean floor consists of abyssal plains, but these flat, featureless regions are covered with sediment and largely devoid of benthic life (benthos). Deep sea benthic fishes are more likely to associate with canyons or rock outcroppings among the plains, where invertebrate communities are established. Undersea mountains (seamounts) can intercept deep sea currents, and cause productive upwellings which support benthic fish. Undersea mountain ranges can separate underwater regions into different ecosystems. Small pelagic fish are usually forage fish that are hunted by larger pelagic fish and other predators. Forage fish filter feed on plankton and are usually less than 10 centimetres