Glide beneath Maunalua Bay on a self-propelled electric scooter and meet coral gardens, tropical fish, and Hawaiian green sea turtles—no scuba certification required. This two-hour small-group catamaran tour combines a short guided underwater ride with snorkeling and island storytelling.
More ways to explore the area's outdoor wonders
The catamaran slips away from Koko Marina as Diamond Head watches from the west and the Koolau cliffs push a steady breeze across Maunalua Bay. Bright sun cuts the ocean’s surface; below, the water seems to call you in. You step onto a 50-foot power catamaran, get a concise safety briefing, then ease onto a self-propelled electric submarine scooter that lets you glide under the surface without full scuba gear.
Difficulty
easy
Duration
2 hours
Fitness Level
Suitable for light to moderate fitness; participants should be comfortable entering and moving in open water.
Wildlife
History
Maunalua Bay and the surrounding Kuliouou–Koko Head coastline have longtime Hawaiian cultural ties as fishing and navigation areas; nearby Koko Crater is a volcanic tuff cone from Honolulu’s late-stage eruptions.
Conservation
Tours operate with rules to minimize reef contact and disturbance; use reef-safe sunscreen, follow guide distance rules, and avoid feeding or touching wildlife to protect sensitive coral habitats.
Reserve your spot on the Submarine Scooter Adventure on Oahu today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Arrive Early for Check-in
Check in 30 minutes before departure at Koko Marina and bring a government photo ID; the boat leaves promptly.
Morning Departures = Better Visibility
Book early slots when winds are lighter and water clarity is usually at its best for underwater photos.
Respect Wildlife
Do not touch or chase turtles or coral; follow your guide’s distance rules to protect both you and the reef.
Motion Sickness Prep
If you are prone to seasickness, take medication before boarding and choose a central seat on the catamaran for a steadier ride.
Swimsuit
Wear under your wetsuit top for quick gearing up and comfort in the water.
Reef-safe Sunscreen
Protects your skin while preventing harm to coral and marine life.
Towel and Change of Clothes
You’ll want dry clothes for the return ride and post-tour comfort.
Light Water Shoes
Useful on the marina and for boarding, especially if docks are wet or rocky.