El Secreto
Protected Area
Cabo Blanco
Why dive here
With 217+ marine species recorded in the area - including dolphins, humpback whales, orcas, sea turtles and pufferfish - El Secreto offers some of Caribbean Coast's richest cave diving. Water ranges 29-31°C, warmest March, April, May.
El Secreto, off Costa Rica’s Caribbean coast, has a reputation for keeping you guessing. We usually find ourselves exploring a shallow reef, topping out at around 17 metres, though you’ll often find yourself shallower. Visibility averages around six metres, which isn't the best, but we've seen it push ten on a good day, so don't write it off. What makes El Secreto our favourite here isn't the expansive vistas, but the chance to really slow down and focus. This site is all about the little things. We've spent entire dives here within a small area, spotting Roughbar Frogfish tucked away or watching Antler Dragonets dart across the sand. Look closely for Yellow Snake Eels peeking out, or the striking colours of a Blackfin Soapfish. Currents can be unpredictable; sometimes you'll be zipping along, others it's a calm drift, perfect for macro photography. We'd suggest going with a guide who knows the site well – they're key to uncovering its tiny wonders. It suits divers who appreciate detailed observation over wide-angle views, and who don't mind a bit of a treasure hunt.
Safety Notes
Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.
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Conditions
Ocean conditions, forecast and tides for El Secreto
El Secreto Ocean Conditions
Monthly averages for El Secreto, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (9.78, -84.89) (48km away)
October Averages
Sea Temperature
29°C
85°F · Range: 27.9–31.1°C
Current Speed
5 cm/s
Direction: N (0°)
Chlorophyll-a
0.142 mg/m³
Clear water
Salinity
28.81 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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