Black Sea Wildlife Welfare 2025

The Black Sea — almost entirely enclosed, with limited water exchange through the Bosphorus — supports unique marine life including endemic dolphins and harbour porpoise. The Russia-Ukraine war has created unprecedented marine welfare disruptions in this enclosed sea.

Key Species: Common bottlenose dolphin: 80,000-100,000 | Common dolphin: 50,000+ | Harbour porpoise: 30,000-40,000 | Atlantic sturgeon (functionally extinct) | Turbot | Anchovy fishery

Dolphin Welfare and the War

Wartime Welfare Crisis: The Russia-Ukraine war (2022-present) has created an unprecedented cetacean welfare crisis. Stranded dolphin numbers along Turkish, Romanian, and Bulgarian coasts increased dramatically after the war began — thousands of dead dolphins washing ashore. Research suggests: naval sonar from warships disrupting dolphin navigation and foraging; naval mine explosions causing acoustic trauma and internal injuries; disrupted shipping causing noise pollution; and possibly military dolphin programs affecting wild population behavior. The cumulative welfare impact on the Black Sea's dolphin populations has been severe.

Bycatch Welfare

Dolphins and harbour porpoise are caught as bycatch in Turkish and other Black Sea fisheries — drowning in gillnets. Pre-war estimates suggested 5,000+ dolphins caught annually. Turkish fishing fleets operate large-scale operations targeting anchovy and turbot. Acoustic deterrents (pingers) reduce bycatch but are not widely used in the Black Sea due to cost and regulation gaps.

Eutrophication Impacts

Agricultural runoff from the Danube, Dnieper, and other rivers has caused severe eutrophication — low-oxygen "dead zones" eliminating benthic communities that dolphins and porpoise feed on. Jellyfish blooms (favored by eutrophic conditions) replace fish prey, reducing food availability for marine mammals. Habitat degradation through eutrophication is a chronic, ongoing welfare stressor.

The Black Sea Environmental Program — coordinating Turkey, Romania, Bulgaria, Ukraine, Russia, and Georgia — represents the governance mechanism for recovery. Post-war environmental restoration in the Black Sea will require coordinated international action on pollution reduction and fisheries management to improve wildlife welfare.

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