I tryed that once, In a buzzard when all the way out to the ocean until I couldn,t see anything in plain site, Jumped out and swam all the way back, took at least 20 minutes to get back to land
A triathlon, swim from the corner of the Airport to the bottom of Alderney, run from those steps all the way up to the NRG showroom, and then ride the bike from there to the Airport, first one to the top of the Multi Storey Car Park outside the Airport wins!