Wild pony swim at Chincoteague Island. Ever read the novel "Misty of Chincoteague"? The Pony Swim has occurred since The horses horses swim across the shallow waters between the Assateague (MD) and Chincoteague (VA) Islands.
'Like quicksand': Both Nicole Graham and her horse were stuck up to their waists in the mud as the tide was closing in. She stayed with her horse for 3 hours, holding his head above the rising tide while being rescued. Now that's true love.