Chain Wall
Protected Area
Halfmoon Caye
Why dive here
With 213+ marine species recorded in the area - including barracuda, dolphins, eagle rays, nurse sharks and sea turtles - Chain Wall offers some of Lighthouse Reef's richest wall diving. Water ranges 27-30°C, warmest August, September, October.
Chain Wall sits just west of Half Moon Caye, a solid alternative when the main wall is busy. We’ve always found the visibility here reliable, often pushing past 30 meters on a good day, making the wall’s sheer drop quite impressive. Look for barrel sponges clinging to the overhangs and keep an eye out in the blue for reef sharks cruising by. It’s a pretty straightforward wall dive, good for any certified diver looking for a relaxed drift and consistent encounters with the usual Caribbean suspects.
Typical Chain Wall Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Always perform a 3-minute safety stop at 5m before surfacing.
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Conditions
Ocean conditions, forecast and tides for Chain Wall
Chain Wall Ocean Conditions
Monthly averages for Chain Wall, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (17.22, -87.61) (6km away)
October Averages
Sea Temperature
30°C
86°F · Range: 29.1–31.7°C
Current Speed
11.66 cm/s
Direction: NW (301°)
Chlorophyll-a
0.074 mg/m³
Very clear (oligotrophic)
Salinity
35.96 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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