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NauticalNickVisibility Report

Two Harbors

Two Harbors · Catalina Island · California

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Entry type
Shore + boat
Spearfishing
Legal
Difficulty
Beginner
Popular activities
Swim · Snorkel · Scuba

Today's forecast

Updated 10:00 AM PT today · July 28, 2026
Predicted visibility
78
ftRange 7482
Perfect
High confidence
0510152030+ ft
Time of day
Today's forecast updates
68 ft
6 AM
Morning run
78 ft
10 AM
Wind refresh
1 PM
Pending

The clarity holds through the day, with a light afternoon onshore the only disturbance to the entry shallows.

What influences the visibility?
Contributing factors
DiveLine visibility nowcast
78ft
Moderate impact · Neutral for vis
Moderate swell
3.5 ft
Minor swell · Neutral for vis
Short-period chop
5.0 s
Minor chop · Neutral for vis
Light wind
3 kt
Minor wind · Good for vis
Ocean Oracle

7-Day Forecast

Forecasts beyond today are Pro-only
Today · Tue
Jul 28
78 ft
Perfect
The clarity holds through the day, with a light afternoon onshore the only disturbance to the entry shallows.
Wed
Jul 29
14
Good
Ocean Oracle Pro
Thu
Jul 30
9
Fair
Ocean Oracle Pro
Fri
Jul 31
16
Excellent
Ocean Oracle Pro
Sat
Aug 1
19
Excellent
Ocean Oracle Pro
Sun
Aug 2
11
Good
Ocean Oracle Pro
Mon
Aug 3
13
Good
Ocean Oracle Pro
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Map · getting there

33.443° N · 118.499° W
Map of Two Harbors at the Isthmus of Catalina Island
Static map
Address
Two Harbors
Catalina Island, CA 90704
33.4427° N, 118.4985° W
Field notes

About Two Harbors

Two Harbors is the other town on Catalina, a small village at the Isthmus on the west end of the island where the land narrows to about half a mile between Isthmus Cove on the front side and Cat Harbor on the back side. The year-round population is around 200. The village has one general store, the Harbor Reef restaurant, a dive shop, a campground, a small kayak rental, and a sailboat anchorage. Everything closes early. The Catalina Express runs a separate ferry line from San Pedro, the Safari Bus crosses the island from Avalon, and most Catalina locals reach the village by private boat.

Harbor Sands is the small white-sand swimming beach off the Isthmus Pier, where families and waders spend the day. Snorkeling inside the cove itself is poor, and most of the diving activity on this side of the island happens at the nearby offshore sites. Bird Rock, Blue Cavern Point, Eagle Reef, Sea Fan Grotto, and Ship Rock all sit within a short boat ride of the cove, and dive shops in Avalon and San Pedro run half-day charters to them with scuba gear. Visibility at these offshore sites tends to run cleaner than inside the cove because they are further from the harbor runoff.

Dense giant kelp grows along the edges of both harbors, which is a kelp forest biome. Isthmus Cove and Cat Harbor are both partially enclosed protected anchorages with the calm water and harbor character of a bay biome.

There are no roads in. Access is by Catalina Express ferry from San Pedro, by Safari Bus from Avalon, or by private boat. Once on the ground, the village is fully walkable. Fishing and spearfishing are legal under standard California regulations. The surrounding MPAs are close: Blue Cavern Onshore SMCA wraps the headland just east of Isthmus Cove and is no-take, and Arrow Point to Lion Head Point SMCA sits to the west. Position should be verified with a chartplotter before harvesting near the village.

Kelp Forest biome illustration
Biome illustration
Biome

Kelp Forest

The kelp forest biome is giant kelp anchored to rocky bottom and growing up through the water column. The canopy and stipes form a three-dimensional habitat that shelters fish, invertebrates, and the predators that hunt them. Learn more about this biome and the species found in it by clicking the link below.

Learn more in the Biome Glossary
Bay biome illustration
Sub-biome illustration
Sub-biome

Bay

The bay biome is sheltered, low-energy water behind a jetty, headland, or harbor mouth. Reduced wave action lets fine sediment settle out and supports calm-water species and the juveniles that shelter there. Learn more about this biome and the species found in it by clicking the link below.

Learn more in the Biome Glossary
For spearos · for fishing

Target Fish Species

Ocean Oracle Pro
Kelp (Calico) Bass
Year-round · kelp + reef
California Sheephead
Year-round · rocky reef
Barred Sand Bass
Summer · sand-reef edge
Ocean Whitefish
Year-round · deeper reef
California Spiny Lobster
Oct–Mar · reef crevices
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