Here are some links to sites and places that I have found particularly useful

PADI The largest scuba training association

Alex Mustard Very creative UW Photgrapher

Martin Edge His book "The Underwater Photographer" is required reading

Ken Rockwell Topside photographer, but a wealth of knowledge

Reef Photo & Video Where I buy all my gear. Very knowlegeable and great service

Coral Reef Alliance Help save our reefs

Reef Environmental Educational Foundation REEF

Project Aware Protecting the marine environment

Divers Alert Network DAN Insurance and help on medical diving issues

Bruce Bowker's Carib Inn Look no further for the most knowledgeable divemasters on Bonaire

Buddy Dive Resort Bonaire Great Dive Operation on the most diverse reef on Bonaire

Ocean Frontiers East End Grand Cayman Great diving and full service on Cayman's east side

Digital Diver On line community of UW photographers. Lots of tips and shared experiences

Wepixels Another on line community of UW photographers