Hawai'i, United States
Oahu
The most populated Hawaiian island, dived mainly for a cluster of deliberately sunk wrecks and a WWII aircraft off the south shore, with a separate commercial shark-tour industry running out of Haleiwa on the north shore.
- Wreck
- Macro
- Sharks
Best season
Best May–Oct
Minimum cert
Advanced
Water
24–27°C
Current
moderate
Season
When this place works
South shore wreck diving runs year-round and is sheltered. North shore is seasonal in practice: winter (Nov-Mar) brings the swell Oahu is famous for and the Haleiwa tours cancel frequently. Because the wrecks are unaffected, the…
Why dive here
What this place is known for
01wreckSouth shore wreck cluster
The reason to dive Oahu rather than the other islands. Five accessible wrecks within a short boat ride: the YO-257 and San Pedro dived as a pair, the 50m Sea Tiger sitting upright with open hatches, the Nashua tug at 20m, and the Corsair. Nothing else in…
- 02wreck
The Corsair
A WWII F4U Corsair fighter that ditched intact and sits on open sand at 33m with propeller, cockpit and tail recognisable. Distinct from the scuttled ships: this is an actual loss, not an artificial reef, and garden eels and leaf scorpionfish have colonised…
- 03macroLow confidence
Frogfish and nudibranchs on the wrecks
Surprise relative to the headline. Oahu is booked as wreck diving and the wrecks are covered in macro subjects, including frogfish described as reaching volleyball size, plus nudibranchs, day octopus and leaf scorpionfish.
Marine life
Twelve-month species timelines
Reliably seen on most wrecks; very large individuals on the YO-257.
Resting inside the San Pedro's portside overhang and around the YO-257. Unbaited, and entirely separate from the Haleiwa shark tours.
The common species on Haleiwa cage tours, which use bait. Encoded 'baited' for the cage product; the cage-free operator states it does not chum, so the same animal is encountered both ways on the…
Dec-Apr. Acoustic only for divers, as at Kona: song is audible from 5-20 miles away on the deeper wrecks. In-water approach is federally regulated.
Conditions
What the water is like
Water temp
24–27°C
15°C — 32°C
Visibility
18–30 m
0 m — 40 m
Current
moderate
mild — strong
Thermoclines
Not typical
unlikely
Minimum certification — Advanced
The wrecks are the gate, not the water. YO-257 and San Pedro sit around 30-38m and the Corsair at 33m, so this is deep recreational diving with short bottom times, and Advanced is the practical floor despite Oahu's easy reputation.…
Entries — boat, shore
Recommended & required
- nitrox — recommended. The wreck cluster sits at 30-40m and is usually dived twice in a morning.
- wreck_penetration — recommended. The Sea Tiger has open doors and hatches and is routinely entered.
Logistics
How people dive it
2-7 days
scuba
Two-tank boat mornings out of Honolulu and Waikiki to the south shore wrecks. Large operator market with a wide quality range and heavy…
1-7 days
scuba
Shore entries exist but the wrecks that make Oahu worth diving are all boat access.
2 hours
snorkel
Format mismatch warning. The Haleiwa shark tours are the most heavily marketed in-water activity on Oahu and they are NOT diving: cage…
Operators
Who to book with
Loading operators…
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