16m
    Intermediate
    Canary Islands, Spain
    Cueva marina de San Juan

    Brains Cave

    Best months: Aug–Dec

    Protected Area

    Cueva marina de San Juan

    Why dive here

    With 76+ marine species recorded in the area - including dolphins, octopuses, sea turtles, sperm whales and cuttlefish - Brains Cave offers some of Canary Islands's richest cave diving. Water ranges 20-24°C, warmest August, September, October.

    Best timeAug–Dec
    WetsuitA 3mm full wetsuit
    Marine lifeDolphins, Octopuses, Sea Turtles, Sperm Whales and Cuttlefish · 76+ species recorded
    Water20-24°C · warmest August, September, October
    CharacterCave dive · max 16m
    StandoutRich in charismatic marine life

    Brains Cave offers a straightforward cave penetration, dropping to a maximum depth of 16 meters. It's a good spot for intermediate divers looking to gain some experience with overhead environments without extreme challenges. Inside, the rock formations are interesting, and you’ll often find groups of shrimp clinging to the walls, along with an occasional octopus tucked away. We’d suggest this dive for those who appreciate the unique atmosphere of a well-lit cavern.

    Typical Brains Cave Dive Profile

    10mSafety Stop0m16m max~50 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

    Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:0617:4311h 38m daylightGolden hour 17:12

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    Conditions

    Ocean conditions, forecast and tides for Brains Cave

    Brains Cave Ocean Conditions

    Monthly averages for Brains Cave, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (28.18, -15.41) (10km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    24°C

    74°F · Range: 22.2–25.4°C

    Current Speed

    10 cm/s

    Direction: SE (126.9°)

    Chlorophyll-a

    0.081 mg/m³

    Very clear (oligotrophic)

    Salinity

    36.89 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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