The plankton in the whole water column depends on photosynthetic production in the upper layer, the euphotic or epipelagial zone, where there are zooplankton that remain in this layer all the time. Below is the deep-sea zone, with animals that show different

The availability of oceanic plankton and micronekton to the benthopelagic fish assemblages on the slopes of the Rockall Trough, a marginal region of the northeast Atlantic deep-sea environment, is examined. The vertical distribution of pelagic species

Thirteen essentially (holo)pelagic species of Mysidacea (Lophogastrida and Mysida), plus five benthopelagic species were taken with vertical plankton hauls (mostly 1000-0 m depth) and by examining the stomach contents of benthopelagic fish (from 550-700