ABC ReefSafaris

Small-vessel reef safaris out of Port Douglas that keep an industry-leading guest-to-guide ratio of 1:6, with marine biologists among the guides. The dive boat Independence carries just 12 guests while the catamaran Voyager takes up to 24 snorkellers to outer-reef sites like Agincourt, Opal and Undine, plus the calmer Low Isles. Alongside guided snorkel and scuba days they run freediving trips and PADI courses from Open Water through to instructor level.