Coos Bay

Oregon, United States

Depth

18m

Visibility

3m - 9m

Entry

Shore

Experience Level

Beginner

Coos Bay

Oregon, United States

Depth

18m

Visibility

3m - 9m

Entry

Shore

Experience Level

Beginner

About Coos Bay

This is a beautiful bay to dive. The Coos River enters this bay and discharges into the Pacific. Visibility can be reduced due to the passing ships and sandy bottom. This bay offers several diving area for all level divers. Lots to see and explore.

Coos Bay Dive Info

Terrain & Features

Rock, Other, Inland

Entry Type

Shore

Max Depth

18m

Visibility Range

3m – 9m

Experience Level

Beginner

Best Gas Mix

21% – 50%

O₂

CNS Load (45 min)

13% at 16m / 36%

O₂

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Marine Life

Crabs
Groupers
Lingcods
Perch
Various

Weather Conditions

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Dive Operators near Coos Bay

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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.

Thermocline Buoyancy Shift — Sharp thermoclines can cause sudden buoyancy changes.

Instant Visibility Collapse — Sediment disturbance can eliminate visibility immediately.

Late Detection of Structures — Submerged structures may only appear at very close range.

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