Neptune's Arm
Why dive here
With 309+ marine species recorded in the area - including barracuda, blue-spotted stingrays, oceanic whitetip sharks, sea turtles and sperm whales - Neptune's Arm offers some of Quirimbas Archipelago's richest cave diving. Water ranges 26-30°C, warmest February, March, December.
There’s a reason Neptune’s Arm keeps coming up in conversations about Mozambique diving. It's not just a healthy reef; it’s a sprawling, vibrant city of coral. We’re talking about vast fields of hard corals here, specifically the branching staghorn and the massive potato groupers that hover amongst them. Dive over a bommie and you might catch the flash of a Napoleon wrasse gliding by. We love the feeling of just drifting, watching the intricate patterns of the honeycomb corals and the subtle glow of fluorescence grass coral. Visibility is generally excellent, making it easy to spot the argus groupers lurking in the shadows. This spot suits divers who appreciate truly healthy coral ecosystems and aren’t afraid of a bit of remote travel for the reward. Dive this site mid-morning; the light plays beautifully through the water, illuminating the coral gardens.
Safety Notes
Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.
Reviews for Neptune's Arm
Conditions
Ocean conditions, forecast and tides for Neptune's Arm
Neptune's Arm Ocean Conditions
Monthly averages for Neptune's Arm, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-11.02, 40.68) (43km away)
October Averages
Sea Temperature
28°C
82°F · Range: 26.1–28.9°C
Air Temperature
26°C
78°F
Wind Speed
7.15 m/s
13.9 knots
Atmospheric Pressure
1014.5 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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