1. Shots are too far away. Could be captured uniforms for all I know.
2. Why would the Ukrainians station an 80 man garrison on a small remote island off the coast of the black sea? 80 take alot to feed and equip over an extended period of time where a garrison of 13 would be enough to patrol the island, keep it secure and you can resupply them every week not every day.
3. These are marines, the boys from snake island were border guard service. Unless Ukraine went to strike back at said small rock again, wasting the marines in an effort that would obviously get them captured or killed for little value, makes no tactical sense.
I'm not believe the Russians on this one,