THE ADVENTURE COLLECTIVE® · Independent discovery and booking for outdoor travel
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.
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.
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.
Verified experiences and guided adventures in the surrounding area.
Operated by Island Water Sports Hawaii, Inc. · Honolulu, Hawaii
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.
Maunalua Bay sits on the leeward edge of the Koolau volcanic ridge; coral ledges and lava-formed reefs shape underwater lanes where reef fish and Hawaiian green sea turtles feed. The area has been a fishing and canoeing place for Native Hawaiians for centuries, and modern tours aim to share that living marine environment while keeping impacts low.
Expect 20 minutes of guided underwater scootering interspersed with surface time for snorkeling and photos. The scooters are beginner-friendly — you control speed while the guide sets direction and safety limits. After the underwater portion, enjoy shaded deck time with snacks and island stories from your guide.
Practical notes: arrive 30 minutes early to check in at Koko Marina (bring photo ID), wear a swimsuit, and be comfortable entering open water. Morning departures usually offer calmer seas and clearer visibility. Follow guide instructions around turtles and coral — do not touch or chase wildlife. If you get seasick, consider medication the night before and avoid heavy meals immediately before boarding. Tours have size and health limits (max weight ~350 lbs, minimum age 10); check cancellation and refund windows when booking.
No — the electric submarine scooters are designed for beginners and the guide controls the dive plan; basic swimming ability is required.
Minimum age is typically 10 years and minimum height around 4 feet (1.2 m); maximum weight is approximately 350 lbs and maximum height about 6'8"—operators require waivers.
Most guests purchase professional photos offered by the operator; personal cameras are possible only with proper waterproof housings and operator approval.
Tours may be canceled for safety due to rough seas or poor visibility; check cancellation policies and operators usually offer refunds or rebooking.
Island Water Sports Hawaii, Inc. operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.
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.
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.
Maunalua Bay sits on the leeward edge of the Koolau volcanic ridge; coral ledges and lava-formed reefs shape underwater lanes where reef fish and Hawaiian green sea turtles feed. The area has been a fishing and canoeing place for Native Hawaiians for centuries, and modern tours aim to share that living marine environment while keeping impacts low.
Expect 20 minutes of guided underwater scootering interspersed with surface time for snorkeling and photos. The scooters are beginner-friendly — you control speed while the guide sets direction and safety limits. After the underwater portion, enjoy shaded deck time with snacks and island stories from your guide.
Practical notes: arrive 30 minutes early to check in at Koko Marina (bring photo ID), wear a swimsuit, and be comfortable entering open water. Morning departures usually offer calmer seas and clearer visibility. Follow guide instructions around turtles and coral — do not touch or chase wildlife. If you get seasick, consider medication the night before and avoid heavy meals immediately before boarding. Tours have size and health limits (max weight ~350 lbs, minimum age 10); check cancellation and refund windows when booking.