Well, its pretty easy spotting which island is Santorini on that map.

About that nasty looking seismo. If it was volcanic tremor it isn't continuous which I would normally put down to 'something else', but with all those quakes going on maybe it was a volcanic burp (I just made that up as I have no idea what that graph and this swarm means).

Watching....

How close are those other seismos to Santorini? Am having trouble with the locations. Would any of those other seismos be close enough to give another picture of what might be happening?