Jim Dreyer, known by his nickname The Shark and the Human Tugboat, is an American adventure swimmer who swam 22 miles over 51 hours with a wetsuit from Harsens Island pulling a ton of bricks on two dinghies to the beach at Detroit’s Island park. The charity swim was performed on behalf of Habitat for Humanity. He is also the race director for the Mighty Mac Swim across the Straits of Mackinac and organized the [[Mighty Mac 50th Anniversary Swim across the Straits of Mackinac.
Mighty Mac 50th Anniversary Swim
On 3 September 2007, Dreyer, Kellie Nightlinger and 50 swimmers of Team Dire Straits crossed the Straits of Mackinac in a charity swim to celebrate the 50th anniversary of the Mackinac Bridge, swimming between Michigan’s upper and lower peninsulas. The Mighty Mac 50th Anniversary Swim was part of the 50th Annual Mackinac Bridge Walk. Governor Jennifer Granholm initiated the annual bridge run and came up with the idea of having 50 swimmers cross the Straits for the 50th Anniversary of the bridge together with Dreyer and Kellie Nightlinger.