Russia has reinforced the defenses of its Black Sea Fleet base in occupied Sevastopol, Crimea by deploying common bottlenose dolphins as part of a multi-layered security system.

Russia has recently stepped up the defences of the Black Sea Fleet base in occupied Sevastopol and is using common bottlenose dolphins to protect it

Russia has been reinforcing security measures for the Black Sea Fleet base in occupied Sevastopol since summer 2022, including at least four layers of nets and boom barriers

Imagery shows a near doubling of floating mammal pens in the harbour which highly likely contain bottle-nosed dolphins

The dolphins housed in Sevastopol harbour are highly likely intended to counter enemy divers

According to British intelligence on June 23, 2023, Russia's defense of Crimean waters has also been strengthened by an increase in the number of trained marine mammals.

Strikes have been carried out on Novofedorivka, Dzhankoy, and Chornomorsk in Crimea since August 9 last year.