Reefwander
A scuba diver descends past the deck of a sunken ship, backlit by sunlight from the surface — Grand Cayman

Grand Cayman · Cayman Islands · Pinnacle · Reef

Three Sisters

Agatha, Bertha and Cleo, and the third one leans

Area photo: c&rdunn · CC BY-SA 2.0

Three towering coral pinnacles off Grand Cayman's East End, named Agatha, Bertha and Cleo. An open-topped canyon runs from near the mooring pin straight to the first of them, which keeps the navigation simple, and the third pinnacle leans noticeably at a depth of 70 ft (21 m).

Where it is and how deep

Depth profile of Three Sisters: typical dive to 21 m (to 70 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit21 mtypical dive
Depths on a shared scale to 40 m (130 ft); dashed lines mark common certification limits.

19.2885° N, 81.1177° WPublished position for this site.

The dive

Navigation is the easy part of this dive. From near the mooring pin an open-topped canyon provides a direct path to the first formation, so you drop, find the canyon and follow it rather than casting about across the reef. Being open-topped it is a corridor rather than a swim-through, which keeps it straightforward for divers who would rather not go under anything.

The three pinnacles are named Agatha, Bertha and Cleo, and they are worked in turn, with the third one notable for leaning at a depth of 70 ft (21 m). That is the deepest part of the dive, so the sensible order is to take the deep formation while there is time and gas for it, then come back along the chain and finish on the shallower ground near the pin before ascending.

Marine life and season

The sources we used don't single out particular species here.

Month-by-month season rating for Three Sisters
JanFebMarAprMayJunJulAugSepOctNovDec
PrimePrimePrimePrimeGoodGoodGoodFairFairFairGoodPrime

Season follows Grand Cayman: December to April is drier and calm enough for the exposed south side; August to October is hurricane season, and the rain peaks in October.

Sources

  1. Three Sisters - Scubago — Scubago

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