Thomas Sjöblom and his wife were out sailing on Sunday afternoon at the southern end of Askö in Trosa. Then they noticed something in the water by the boat.
The saddle dolphin circled the boat for about ten minutes before it swam on an adventure. Earlier in May, a killer whale appeared at Hunnebostrand, on the West Coast. But just a few days later, it floated up dead on the beach. The so-called spy whale "Hvaldimir" also became a talking point when it appeared at the end of May.