Boss Reef
Protected Area
Grand Anse
Why dive here
With 263+ marine species recorded in the area - including barracuda, humpback whales, nurse sharks, orcas and sea turtles - Boss Reef offers some of Southwest Coast's richest wreck diving. Water sits around 27°C.
Edna’s Anchor isn't a deep dive, but it's one of our favourite spots for a relaxed morning out. You follow the reef edge along a gentle slope, maybe 20 metres down, until the sand opens up. That's where you find the anchor, a big, imposing thing wedged between two coral heads. It’s a proper piece of history, not just some random debris, and knowing the schooner Edna sank later in Atiu adds a cool dimension to it. The anchor itself is absolutely encrusted – we’re talking serious coral growth, home to countless delicate blennies poking out and small territorial damselfish darting around. Look closely and you’ll spot eroded cowries tucked into crevices. We’ve had great luck finding false-eyed pufferfish hovering nearby, almost posing. The visibility here is usually excellent, around 26 metres, so you get a really clear view of the whole scene. It's a calm dive, perfect for photographers or anyone who likes to take their time exploring a smaller site with a great story. We often finish up watching marbled parrotfish browse the nearby staghorn corals.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Nearest Dive Centres to Boss Reef
Dive shops near Boss Reef
Sandals La Source
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Reviews for Boss Reef
Conditions
Ocean conditions, forecast and tides for Boss Reef
Boss Reef Ocean Conditions
Monthly averages for Boss Reef, sourced from NOAA buoy data - nearest station: Open-Meteo grid (12.04, -61.77) (0km away)
August Averages
Sea Temperature
27.36°C
81°F
Air Temperature
27.59°C
82°F
Wind Speed
5.46 m/s
10.6 knots
Atmospheric Pressure
1013.2 hPa
Based on 5 years of monitoring data · Data sources: NOAA NDBC
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