These guys are real professional in freediving. They came from Czech to Sardinia, Italy, to participate in the AIDA Team World Championships 2014. 25 nations represented by 120 athletes fought to become world champions. They stayed 12 days in Sardinia, where they were training and competing. It was very hard, because they had to dive beyond the one hundred meters to win. Participants needed to train a lot, because the pressure at such a great depth is very strong, and it is very important to use special diving technique to avoid negative consequences.