Oahu
Mahi Wreck Dive
Navy Minesweeper Transformed into Thriving Marine Ecosystem
Why Mahi Wreck?
Located off Waianae's coast, this intentionally sunk Navy minesweeper offers advanced divers an impressive artificial reef at 85-100 feet. The large, intact structure attracts diverse marine life and presents remarkable underwater photography opportunities. From its coral-covered deck to accessible cabins, each dive reveals new aspects of this historic vessel.
Diving Experience
This advanced site requires certification and deep diving experience. Trips depart from Waianae Harbor, with morning dives offering optimal conditions. The wreck's size provides multiple exploration zones, while the open structure allows safe observation of marine life. Boat access only, with typical dive times of 25-30 minutes.
Responsible Diving
Plan deep dives conservatively and monitor air consumption closely. Maintain proper navigation near the wreck to protect coral growth. Complete mandatory safety stops and respect no-decompression limits. Avoid penetrating enclosed spaces for safety.
Quick Facts
Location: West Shore Oahu, near Waianae
Depth: 85-100 ft (Advanced)
Visibility: 100+ ft
Marine Life: Sharks, Turtles, Reef Fish, Rays
What You’ll See
Structure: Historic Navy minesweeper
Reef Fish: Angelfish, butterflyfish, parrotfish
Hidden Creatures: Moray eels, octopi, reef sharks
Special Visitors: Eagle rays, seasonal whales
Frequently Asked Questions
What certification level needed?
Advanced Open Water or equivalent required
Are currents strong?
Generally mild, can vary with conditions
Best time to dive?
Morning offers calmest seas and visibility
Is wreck penetration allowed?
External exploration only for safety
Ready to Explore?
Experience this historic military vessel turned thriving artificial reef. Advanced divers discover a unique combination of wreck diving and marine life observation at one of Oahu's premier deep sites.