The project is starting, but the purpose of it is to mention the best open water swimmers in the world.

In modern-day swimming open water swimmers are usually top-tier long-distance (800m and 1500m) Olympic freestyle swimmers.

Grant Hackett after winning the 10-kilometre swim at Penrith
A great example would be Grant Hackett, one of the most decorated Australian swimmers of all times and definitely the most popular long-distance one. He has recently started an open-water career, and is showing really impressive progress, although many would expect easy wins from him, they don’t always come easy after long breaks he had.