The Grotto Suggest edit

United States Suggest · Northern Mariana Islands Suggest

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AdvancedDifficulty

AdvancedRecommended cert

21Max dive depth

21.0 mSite max depth

15.0–30.0 mVisibility

MildCurrent

ModerateSurge

45 minAvg dive time

April to NovemberBest months

27.0–30.0 °CWater (summer)

24.0–27.0 °CWater (winter)

Overview

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The Grotto features a collapsed limestone cavern with an underwater tunnel that connects to the open ocean, offering unique swim-through experiences.

Conditions

Visibility: 15.0–30.0 m Suggest edit
Currents: Mild Suggest edit
Surge: Moderate Suggest edit
Water temp (summer): 27.0–30.0 °C Suggest edit
Water temp (winter): 24.0–27.0 °C Suggest edit

Logistics

Entry: Both Suggest edit
Permits required: No Suggest edit
Bottom types:
sand coral rock Suggest edit

Photo tips

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Use a wide-angle lens for capturing the cavern interiors and marine life.

Location

Underwater Moments at The Grotto

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