What Brunei has on land in terms of natural, unspoilt ecosystems in their lush, tropical rainforests is equally found in their underwater backyard. Most coral reefs here are in pristine condition and host highly diverse coral communities. Brunei reefs have an unusual and distinctive co-occurrence of reef-building (hard) corals, soft corals and gorgonian sea fans. Recent surveys have revealed the existence of rare coral species of euphyliids, poritids, faviids and acroporids, which typically occur in waters deeper than 25 metres.

Reefs around Brunei are generally quite shallow, with rich coral fauna, high coral cover and a fascinating variety of fish life. They are excellent training grounds for open water dives. The diving community in Brunei is just beginning to host visitors to our unexploited gardens of the marine world. With more local dive centres setting up in the city offering reef and wreck dives, muck dives for avid macro photographers keen to capture organisms breathtaking or bizarre, and various marine sports, diving in Brunei waters has become popular among the new as well as seasoned divers. There are also a couple of local clubs that organize dives to deep wrecks.