Ko Olina Glass Bottom Sunset Cruise: West Oahu Reef

Fifty-foot catamaran, glass bottom ports, live reef and fish, one hour of open water and sky.

A glass bottom boat sunset cruise departing from Ko Olina Marina on Oahu's West Side, where you watch tropical fish and coral reefs through viewing ports while the sun sets over the ocean. The tour runs 90 minutes aboard a 50-foot catamaran with a live English-speaking guide; no snorkeling or swimming is involved, and the boat has restrooms and bottled water on board.

Step-by-step itinerary

Glass bottom sunset cruise

• Board 50-foot power catamaran
• Cruise from Ko Olina Marina
• View coral reefs through glass bottom
• Enjoy sunset views over West Oahu

The Experience

The boat leaves Ko Olina Marina and heads out along the calm West Oahu coastline. You settle on deck with unobstructed views of the horizon as the sky shifts through gold and pink. The catamaran is spacious enough to move around—take photos, find a spot that suits you, watch the light change. A crew member is there if you need anything.

The glass bottom viewing ports let you look down at the reef without entering the water. Tropical fish move through live coral in real time, visible and close. The reef sits beneath the boat as you drift, and the light from above reaches down to show the colors. This is the core of the tour—the moment when two views happen at once, the sky overhead and the life below.

The whole outing takes 90 minutes from departure to return. Restrooms and bottled water are on board. The boat accommodates collapsible wheelchairs and walkers, and infants can ride in a pram or stroller. All ages are welcome, and the crew is trained to keep things running smoothly. Ko Olina sunset tours sell out regularly, so book ahead.

What’s included

• Bottled water and restroom access on board.
• live English-speaking guide.
• 90-minute cruise aboard a 50-foot catamaran with glass bottom viewing ports.

Good to know

Easy physical levelStroller friendlyPublic transport nearbyInfants must sit on laps

Operated by Ko Olina Glass Bottom Boat

Is this one for you?The boat stays on the water and you stay dry the whole time, which works for anyone who wants to see the reef without entering it—families with young children, guests who prefer to stay in their clothes, or anyone who'd rather watch than swim.

Traveler reviews

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Top questions

What will I see through the glass bottom ports on this Ko Olina reef tour?

The glass bottom viewing ports show live coral reefs and colorful tropical fish beneath the surface of the West Oahu reef. The light from above reaches down to the reef, so you see the colors and movement in real time as the boat drifts.

Do I have to swim or snorkel on this sunset cruise?

No snorkeling or swimming is required. You stay on the boat and look down through the glass bottom ports to see the reef and fish. It's a dry way to view marine life.

How long is the Ko Olina glass bottom boat tour?

The cruise runs 90 minutes from Ko Olina Marina, including the time to head out, view the reef, watch the sunset, and return to the dock.

Is this tour suitable for young children and infants?

Yes, all ages are welcome. Infants can ride in a pram or stroller, and small children must sit on an adult's lap. The boat is spacious and the crew is attentive to families.

What's included on the glass bottom boat tour?

Bottled water and restroom access on board are included. The tour departs from Ko Olina Marina with a live English-speaking guide. Meals and private transportation are not part of the package.