Offensive in Ukraine: Russian dolphins trained for military purposes, an effective weapon of war?

It is a weapon infinitely less powerful than the famous Satan 2, but which could prove invaluable for the Russian forces. According to the American naval institute, the UNSI, which captured satellite images above the port of Sevastopol, located at the southern tip of Crimea, dolphins would be posted by the Russian navy at the entrance of this strategic base. . This would, again according to the UNSI, aim to prevent possible attacks against many strategic Russian ships posted in the port.