Mystery near Primorsko: Why are dolphins and porpoises dying in the Black Sea?

28.07.2026 | Region

Why is it impossible to determine the cause of death of cetaceans near Primorsko? Experts point to fishing nets as a major risk to the population.

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Tragedy in the Black Sea: Dead cetaceans near Primorsko

The Ministry of Environment and Water (MOEW) announced that the cause of death for the cetaceans discovered near Primorsko remains unclear. The reason is the delayed reporting – the animals were in an advanced stage of decomposition, making an autopsy impossible.

The most likely hypothesis is drowning due to entanglement in fishing nets (so-called bycatch).

Are harbor porpoises endangered?

Experts believe these are harbor porpoises – the smallest species of cetacean in the Black Sea. They are extremely vulnerable as they inhabit coastal waters where fishing activity is most intense.

If you find a distressed or dead marine mammal, report it immediately to the local RIEW. Timely action is the only way to collect reliable scientific data.