A wayward dolphin has been swimming in a Connecticut river after making its way upstream from Long Island SoundThe dolphin was first spotted Thursday morning by fishermen along the Thames River. A video posted to Facebook shows the dolphin jumping around near the Norwich Marina, about 15 miles (24 kilometers) from the Sound. Eventually, the animal rescue team at Mystic Aquarium was notified. They have been monitoring the situation along with the National Oceanic and Atmospheric Administration.