Novice kayaker Jamie Scarlett and his friends ambitiously decided to attempt a roll while out on the waters of Lake Gerionydd in Conwy, Wales. As Scarlett says, “a momentary lapse of concentration ends up in total failure”. One of the thrill-seekers is seen briefly left bobbing upside-down in their boat until rescued and turned right-side-up by a friend. Credit: YouTube/Jamie Scarlett