A seal and tree spinner-dolphins were found washed up on Greek islands' shores in the last few days, the 'Archipelagos' Institute of Marine Conservation reported on Thursday, tortured and mutilated. 
The seal, found in the northern Dodecanese islands, was discovered with its hind flipper tied in a rope, while the three dolphins, located at three different areas in the northern Aegean, were found with flippers removed, most likely by a knife, says the institute; it added that these were evidently cut off purposely to drown the dolphins.