The species diversity of the order copepods, which predominates in multicellular zooplankton, exhibited a maximum in the mid-layer of 200-1000 m water depth.
The copepods communities varied depending on the water depth and were largely divided into three communities: the surface (0-500 m), the middle (500-2000 m) and the gradual depths (deeper than 2000 m).
Four species of the same Metridia species, ranging from surface to water depth of 4000 m, were segregated with different distributed seismic intensity.
Morphology of the four masticatory teeth of the same genus varied depending on the species, and as the species distributed in the shallow layer, the masticatory teeth were smoother, and the species distributed in the deep layer were irregular.
Morphology of the four masticatory teeth of the same genus varied depending on the species, and as the species distributed in the shallow layer, the masticatory teeth were smoother, and the species distributed in the deep layer were irregular.
