John Henderson Rock
Why dive here
With 71+ marine species recorded in the area - including barracuda and pufferfish - John Henderson Rock offers some of Malpelo Island's richest reef diving. Water ranges 28-30°C, warmest September, October, November.
John Henderson Rock offers a deep wall dive, dropping away into the blue. We've seen hammerhead sharks cruising along the edge, often in good numbers, alongside the usual Malpelo cast of silky sharks and eagle rays. It’s a site best suited for experienced divers comfortable with strong currents and offshore conditions. Expect pelagics and a dramatic underwater landscape.
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Conditions
Ocean conditions, forecast and tides for John Henderson Rock
John Henderson Rock Ocean Conditions
Monthly averages for John Henderson Rock, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (12.4, -81.47) (108km away)
October Averages
Sea Temperature
30°C
86°F · Range: 29.3–31.3°C
Current Speed
13.42 cm/s
Direction: NE (63.4°)
Chlorophyll-a
0.094 mg/m³
Very clear (oligotrophic)
Salinity
34.38 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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