A family were treated to an aquatic masterclass after a playful dolphin joined them on their morning swim. Lynda MacDonald, 50, and her partner, son and his girlfriend, set out for their 6am morning swim at Lyme Bay, Dorset on August 3. Seconds after the family jumped off their boat for a swim they were joined by the huge bottlenose dolphin. #dolphin #swimming #dorset #lymebay