Underwater Photography   Photographer Frederic Buyle http://www.nektos.net/   Photographer Dan Burton http://www.underwaterimages.co.uk/   Passion for the underwater world   OceanicDreams http://www.oceanicdreams.com/   OceanicDreams - the blog http://fleander.blogspot.com/   Sharkwater http://www.sharkwater.com/   Competitions   Indoor WC 2007 http://en.wch2007.h2oteam.com/   Coupe des Calanques http://coupedescalanques.free.fr/2007/eng/   MAD Cup 2007 http://en.wch2007.h2oteam.com/home/   General freediving   Shark Freediving Blog http://www.shark-freediving.com/blog   Apnea Mania http://www.apneamania.com/   Freedive Central http://www.freedivecentral.com/   AIDA International http://www.aida-international.org/   Swiss Underwater Sports Federation http://susvsport.blogspot.com/   Freedive Canada http://www.freedivecanada.com/   United States Freediving Association http://www.usfreediving.org/default.htm