6 passengers per dive instructor | marine expert guide. This definitely makes us the diver or snorkelers best choice for a totally uncrowded unique day on the outer reef! Our small unique operation in Port Douglas is the most personal day boat visiting the outer reef taking a maximum of just 12 passengers on board per trip, ensuring you’ll enjoy a very exclusive day. Our trip can take us to several outer reef locations where our very special Great Barrier Reef marine park permit allows us to roam the reefs freely and be away from other tourists and crowded reef locations. Because we have the ability to be able to roam all the reefs off Port Douglas it means we can frequently change our snorkel locations. Ensuring the wildlife acts naturally and does not begin shying from busy reef spots, so the surprise “big ticket” sightings are frequent and amazing! Our team are in the water with you. We ensure you don’t miss a thing on your Great Barrier Reef day tour. ABC are 100% locally owned and operated family business – proudly Australian. We strive to provide the very best Port Douglas Reef trips. Amazing locations. Personalised service. Max 12 Guests.