Not quite the sea, but so far this week have seen two of the large wheely bins and one of those four person cycle-buggy things you can hire (to run pedestrians down and get in the way of cars etc) being fished out of the canals here in alcudia, obviously a few drunken frolics for somebody.
Also whilst having a picnic down at a small cove nearby with friends not so long ago one of them pointed out what looked like a seabird trapped in netting. I ran across the stones in attempt to do my bit to save wildlife only to find it was a diver who must have come around from the next bay. So glad I didn't get as far as dashing into the water for supposed rescue before I realised, but am still trying to live it down! Should have gone to Specsavers!