Dive-site story
Located just outside Kewalo Basin off Oahu's south shore, Horseshoe Reef is shaped by a distinct curved volcanic ledge surrounded by sandy channels. The undercut lava formations create natural shelters where marine animals rest during the day. Calm surface conditions throughout much of the year make this a dependable site for both novice divers and those seeking macro life under overhangs.
Curved volcanic ledge with deep overhangs and swim-through channels
Green sea turtles resting in pockets along the reef wall
Sheltered conditions suitable for training and relaxed navigation
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
South shore waters are flattest when large winter swells break exclusively on Oahu's northern coastlines.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Green sea turtleChelonia mydas | Common | ||||||||||||
| Whitetip reef sharkTriaenodon obesus | Common | ||||||||||||
| Yellowmargin moray eelGymnothorax flavimarginatus | Common | ||||||||||||
| Milletseed butterflyfishChaetodon militaris | Common | ||||||||||||
| Day octopusOctopus cyanea | Seasonal |
Marine forecast
Book with DIVEROUT
