Kelp forest light in Southern California.
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Wednesday, March 11, 2026

Catalina Island — Casino Point Marine Preserve

Conditions
0/100
Good

Visibility Score

Visibility

20-30 ft

Water temp

60°F

Swell

2-3 ft

Period

10s

Tide

High / +3.2 ft

Field notes

Ferry over from San Pedro on a glassy crossing. Casino Point was in solid shape — not the blue-water magic you get in summer, but the kelp forest interior was protected enough from the outer swell to make for easy work. High tide meant the surge stayed manageable. Viz softened toward 20 feet in the shallower sections from some residual mixing after last week's rain, but below 30 it opened up nicely. The marine park boundary holds — fish density here is always noticeably higher than outside the preserve.

Leopard Shark

Three individuals resting in the sand channel near the anchor line, stacked almost on top of each other.

California Moray Eel

Large adult, 4+ ft, in a crack at 18 ft. Actively hunting, not stationary — watched for 15 minutes.

Opaleye

Dense school at mid-water column throughout the dive, classic Catalina.

Giant Kelpfish

Several adults perfectly camouflaged in the fronds. Nearly impossible to photograph without the pattern contrast trick.

Kelp fronds reaching toward the surface in blue water.
A diver drifting past a dense Channel Islands kelp wall.
A reef patrol scene with fish holding in green-blue California water.

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