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Sentinel Rock

Sentinel Rock

Grand Cayman Island West Side, Cayman Islands

Depth
Depth Icon

50m

Visibility
Visibility Icon

15m - 45m

Entry
Boat Entry Icon

Boat

Experience Level

Advanced


About Sentinel Rock

A series of interesting coral pinnacle formations

Sentinel Rock Dive Info

Terrain & Features

Reef, Deep

Entry Type

Boat

Max Depth

50m

Visibility Range

15m 45m

Experience Level

Advanced

Best Gas Mix

21% – 23%

O2

13% at 48m / 24%

O2
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Marine Life

  • Various
Weather Conditions

Water Temperature
Dive Operators near Sentinel Rock

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Location

Dive Site Hazards

  • Hidden Depth Variations — Complex reef topography can conceal depth changes, leading to unintended profile variations.

  • Distraction from Marine Activity — High fish activity can distract divers and delay depth or gas awareness.

  • Rapid Surge Direction Changes — Surge near reef structures can reverse direction quickly, pushing divers sideways into unexpected areas.

  • Gradual Narcosis Onset — Narcosis may develop slowly, making self-assessment unreliable.

  • Task Fixation at Depth — Cognitive narrowing at depth can reduce awareness of time and ascent rate.

  • Increased Gas Density Breathing Load — Higher gas density at depth increases work of breathing.

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