Joint management of marine mammals and a fish species: The case of cod and grey seals in the Nordic‐Baltic Sea countries

In this paper, we present a simple theoretical, steady-state equilibrium, predator-prey model for the joint management of marine mammals and fish species. As an empirical case, choose cod grey seals in Nordic-Baltic Sea countries, several benefits costs related to latter are considered. We show that optimal seal population is much lower than actual population, result robust variations relevant parameter values. This can be explained by fact profit from harvesting higher net seals.