The Big Drop Off
Protected Area
Ngemelis Island Complex
Why dive here
With 182+ marine species recorded in the area - including barracuda, lionfish, mandarin fish, napoleon wrasse and nautiluses - The Big Drop Off offers some of Rock Islands's richest wall diving. Water ranges 29-30°C, warmest June, October, November.
The Big Drop Off is exactly that, a wall that just keeps going, down to an almost ridiculous 285 metres. We love it because it delivers on both the macro and the pelagic, right from the first fin kick. Drop in and you’re immediately enveloped by the shallows, a flurry of fusiliers and parrotfish darting through the soft corals. Our favourite part has to be the overhangs, look closely and you’ll spot Twinspot Hawkfish perched like tiny sentinels, or the shy Longface Emperor peeking out. As you drift down, the wall itself becomes the star, a tapestry of massive sponges and plate corals, each crevice home to something new – maybe a Fluted Clam, or a Bicolor Angelfish flashing its electric hues. Keep one eye on the blue, though. Blacktip sharks often cruise by, and we’ve even been lucky enough to spot a Chambered Nautilus making its slow, deliberate journey. It’s a site that rewards patience and a keen eye, perfect for divers who appreciate both the grandeur of a deep wall and the intricate beauty of the reef’s smaller residents.
Nearest Dive Centres to The Big Drop Off
Dive shops near The Big Drop Off
Cruise Control palau
Cruise Control palau
DayDream Dive Center
Sam's Tours
Blue Marlin
Blue Marlin
Reviews for The Big Drop Off
Conditions
Ocean conditions, forecast and tides for The Big Drop Off
The Big Drop Off Ocean Conditions
Monthly averages for The Big Drop Off, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (7.2, 134.3) (4km away)
October Averages
Sea Temperature
30°C
86°F · Range: 28.5–31.2°C
Current Speed
10.05 cm/s
Direction: N (5.7°)
Chlorophyll-a
0.026 mg/m³
Very clear (oligotrophic)
Salinity
33.62 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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