Russian sturgeon stocks in the Azov Sea have seen a significant increase, growing from almost zero to 2,000 tons over the past nine years. This recovery is attributed to increased protection of aquatic biological resources and a rise in the release of juvenile fish. The restoration of the sturgeon population in the Sea of Azov, which is expected to persist until 2030-2040, is closely linked to the increased protection of the Azov Sea's biological resources and the production of more juvenile sturgeon by fish hatcheries. The Sea of Azov, located along the coasts of several Russian regions, is the world's shallowest sea and has experienced increased salinity since 2007-2008, leading to a growth in jellyfish populations.