09 December 2025

VNIRO scientists have completed marine research in the North Okhotsk subzone of the Sea of ​​Okhotsk

Scientists from the Magadan branch of the All-Russian Research Institute of Fisheries and Oceanography (VNIRO) have completed the 2025 marine field surveys, which began in July as part of the annual monitoring of the summer-fall industrial catch of pollock and Pacific herring in the North Okhotsk fishing subzone of the Sea of ​​Okhotsk.
 
VNIRO specialist Sergei Shershenkov carried out this work on the vessels SRTM Sea Hunter and MTF Morskoy Volk (OOO Tikhrybkom), equipped with midwater trawls. In October and November of this year, 56 trawls were conducted within the subzone, targeting both pollock and herring, collecting biological data from the catches. A total of more than 2,970 pollock and 3,760 squid specimens were analyzed. Pacific herring, as well as approximately 40 species of bycatch fish and squid. Thus, the branch's long-term observations and scientific support for priority fisheries in the northern Sea of ​​Okhotsk were successfully continued. A final analysis of the pollock and herring trawl fisheries for 2025 is currently being conducted.
 
It was shown that the 2025 autumn trawl fishery in the northern Sea of ​​Okhotsk took place under challenging hydrometeorological conditions, with storm winds and heavy seas significantly complicating the formation of stable fishing aggregations in fishing areas and contributing to the active migration of herring and pollock schools across the central and western parts of the northern Sea of ​​Okhotsk. Nevertheless, overall, the fishing situation was satisfactory, which will facilitate the satisfactory development of these resources within the TAC for the North Sea of ​​Okhotsk subzone during the autumn-winter period of 2025.
 
"The implementation of these monitoring studies in 2025 was supported by Tikhrybkom, VNIRO's long-standing partner in fisheries research. These studies allow us to collect extensive and representative data on common fish species, the state of their stocks, and harvesting conditions. They also enable us to quickly address forecasting issues and provide consultations to fishermen to improve harvest efficiency," noted Evgeny Metelev, head of the Magadan branch.
 
These data are used to prepare forecasts of total allowable catches (TACs) for pollock and Pacific herring in the North Sea of ​​Okhotsk subzone, annual fishing season forecasts for these species, and to develop recommendations for the rational exploitation of their stocks.
 
 
VNIRO Press Service