Pena Blanca (White Rock)

Manzanillo Bay, Mexico

Depth

150m

Visibility

15m - 45m

Entry

Boat

Experience Level

Advanced

Pena Blanca (White Rock)

Manzanillo Bay, Mexico

Depth

150m

Visibility

15m - 45m

Entry

Boat

Experience Level

Advanced

About Pena Blanca (White Rock)

Because Pena Blance is in open ocean, the visibility is usually excellent. The bottoms slopes gradually, but the depth goes on to infinity. It is an area where sometimes sharks are seen. Since the entire coast of the state of Colima is on the same latitude as the Hawaiian islands, the underwater landscaping is also very similar to the islands. Bot areas are volcanic in origin, and you'll see lava flows, cracks and fissures, small caves, tunnels and crevices.

Pena Blanca (White Rock) Dive Info

Terrain & Features

Rock, Wall, Other

Entry Type

Boat

Max Depth

150m

Visibility Range

15m – 45m

Experience Level

Advanced

Best Gas Mix

—

CNS Load (20 min)

-1% at 148m / 21%

O₂

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Marine Life

Various

Weather Conditions

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Dive Operators near Pena Blanca (White Rock)

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Location

Location details missing.

Dive Site Hazards

Bubble Trapping Under Overhangs — Rock overhangs can trap exhaled bubbles, reducing visibility and causing disorientation.
Reflected Surge Patterns — Surge reflecting off rock faces can create irregular and unpredictable water movement.
Current Funnel Effect — Narrow gaps between rocks can accelerate water flow unexpectedly.

Unstable Visual Ascents — Relying on wall visuals can destabilise ascents.

Gradual Depth Creep — Lack of visual bottom reference can cause unnoticed descent.

Unsignalled Downcurrents — Downcurrents can form without visible indicators.

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