Long Caye Aquarium
Protected Area
Zone 2
Why dive here
With 213+ marine species recorded in the area - including barracuda, dolphins, eagle rays, nurse sharks and sea turtles - Long Caye Aquarium offers some of Lighthouse Reef's richest reef diving. Water ranges 27-30°C, warmest August, September, October.
Long Caye Aquarium consistently delivers, and it's our pick for a leisurely, vibrant dive when you're exploring Lighthouse Reef. The name isn't just marketing fluff here; it really does feel like swimming inside a massive, open-air tank. We love dropping in over the shallow reef, maybe 6 or 7 metres down, and then following the gentle slope as it gives way to the wall. Visibility hovers around 20 metres most days, sometimes more, letting you take in the sheer volume of fish from a distance. Look for the big schools of French grunts and schoolmasters that mill about the overhangs, sometimes so thick they part like a curtain as you swim through. We often spot Caribbean chestnut morays peering out from their crevices, and the yellowhead wrasse are always darting about. While the data says max 20m, you can really just hang out in the 10-15m range and still feel completely immersed. It’s an easy drift, often with a gentle current pushing you along the wall, making it perfect for photographers or anyone who just wants to soak it all in without fighting the elements. Best enjoyed in the morning, before any stronger breezes pick up.
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Conditions
Ocean conditions, forecast and tides for Long Caye Aquarium
Long Caye Aquarium Ocean Conditions
Monthly averages for Long Caye Aquarium, 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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