Broken Rock
Depth is the range from the top of the site to its usual maximum; "recommended cert" is the mainstream-agency level operators usually ask for, not a legal rule. Currents and visibility change daily — treat everything here as planning ranges.
Broken Rock is named for the fissure that splits the pinnacle end to end: a canyon a few meters wide and up to ten deep, its walls upholstered with sea fans and whip corals that sway as the tide breathes through. Swimming the gap single file, with an eye on surge and fins off the walls, is the signature moment. Around the outside, terraces hold morays, turtles, marbled grouper, and drifts of anthias, and the sand at the base is worth scanning for rays. Photographers burn entire dives inside the crack.
The moment you come for: The fan-lined canyon swim; turtle and moray terraces around the rim
Topography: A thila cleaved in two by a narrow canyon, walls hung with fans and whip corals
Current: Current across the canyon mouth decides whether the split can be swum; guides check before committing groups.
Know before you splash
Hazards: Surge in the canyon; overhead-feeling terrain in the narrowest sections.
Conservation: The canyon's fans are fragile and slow-growing — perfect trim or stay out of the split.
Nitrox: Worth it here — profiles sit in the range where enriched air meaningfully extends no-stop time (with the training to use it).
Who you'll meet
Giant Moray Eel
Hawksbill Turtle
Napoleon (Humphead) Wrasse
Nudibranchs
Spotted Eagle Ray
For photographers
Wide angle: ★★★★★ · Macro: ★★★☆☆ — editors' 1–5 rating of what this site gives each style of shooting