Mesozooplankon was sampled in drifting and daily stations using JOM (Juday net, Ocean Model) net with 0.5 m**2 mouth diameter and mesh size 145 µm. Depth of tow is evaluated by wire paid out and the angle of wire inclination. Nansen's closing device. Samples were treated using express method: copepods were identified to genus level, other zooplankton groups - to type, class, order and family levels.