Can't help with locations.Just wanted to say that whatever you do, get some formal training. I've been a professional/military diver, life support technician and hyperbaric chamber supervisor for my entire working life, currently working at the RAH Hyperbaric Unit. I'm getting tired of reading fatality reports of people with inadequate training drowning in shallow water while snorkelling.Just a friendly word of caution as part of my community safet role.CheersWahoo