Very Important Links / Enlaces Muy Importantes;
Us Freediving Association
Greenpeace, Defending Whales
Ocean Defenders
Wild Dolphin Foundation
Ocean Legacy
Greepeace USA
Seacology
Operation Leviathan
- Apnea Academy International from Umberto Pelizzari.
- Umberto Pelizzari Official Site.
- Martin Stepanek Official Site.
- Tanya Streeter Official Site.
Freediver Connection supported by David Cánovas (Spain).