After 20 years of risky exploration and technical trial and error, Polish diver Krzysztof Starnawski finds the world’s deepest submerged cave. Get to know all 10 honorees, then vote every day for the People's Choice until December 16, 2016. The winner will be announced in January 2017.

Podpisz apel. Ku czci Ostatnich Rycerzy Rzeczypospolitej.