What you'll do:

Board a double-decker catamaran at Waianae Boat Harbour and spend three and a half hours on Oahu's west coast, swimming alongside wild spinner dolphins in open water, snorkelling a coral reef full of sea turtles and tropical fish, and riding a 21-foot waterslide off the back of the boat.

• Swim with Wild Dolphins - Enter the water in the open ocean and swim alongside wild spinner dolphins in their natural habitat, guided by the crew on timing and safe approach distance.

• Snorkel the Reef - Drop into clear water above a coral reef teeming with tropical fish and Hawaiian green sea turtles, with all snorkel gear provided and guides in the water with you.

• Ride the Waterslide - Take a run down the 21-foot onboard waterslide directly into the Pacific, the amenity that makes this catamaran tour unlike any other on the island.

• Paddleboard or Kayak - Take out a stand-up paddleboard or kayak from the boat during the reef stop, with equipment included and no prior experience needed.

• Relax on the Sundeck - Claim a spot on the upper deck between activities, with lunch and beverages served onboard while the crew handles everything else.

This is a full morning or afternoon on the water with multiple activities stacked into one booking, suited for families, birthday groups, and anyone who wants more than a single-activity boat ride.

Why we love it for your adventure:

• Two Tour Options - Choose the dolphin swim for in-water encounters or the dolphin watch to observe from the deck; both tours include every other activity at the same price.

• Everything Included - Snorkel gear, flotation devices, lunch, and beverages are all covered in the ticket price, so there is nothing to source or pay for separately on the day.

• 21-Foot Waterslide - The onboard waterslide is a feature no other Oahu dolphin or snorkel tour offers, and it runs the entire time the boat is anchored at the reef.

• Complimentary Shuttle from Waikiki - Round-trip transportation from Waikiki and Ko Olina is available, so guests staying anywhere on the south or west side can join without needing a rental car.

• All Ages and Experience Levels - The tour is designed for swimmers and non-swimmers alike, with flotation devices available and guides in the water throughout the snorkel and swim portions.

About this experience partner:

Iruka Hawaii Dolphin Tours operates out of Waianae Boat Harbour on Oahu's west side, running catamaran dolphin and snorkel tours for families, groups, and individual travellers aboard a double-decker vessel equipped with a 21-foot waterslide, paddleboards, and kayaks. The company is one of the most reviewed dolphin tour operators on the island, known specifically for its local crew's knowledge of spinner dolphin behaviour and the west coast reef systems where the tours anchor. Guests consistently highlight the combination of multiple activities in a single booking, the included lunch, and the crew's attentiveness as the reasons they recommend Iruka over other Oahu ocean tour operators.

Additional information:

• Tour duration is approximately 3 to 4 hours; both morning and afternoon departure times are available and noted at booking.

• Complimentary round-trip shuttle is available from Waikiki and Ko Olina; confirm your pickup location when booking.

• Snorkel gear, flotation devices, all ocean activity equipment, lunch, and beverages are included in the ticket price.

• An onboard photographer is available; photo packages are $70 and purchased separately on the day of the tour.

• BYOB is permitted after the snorkel portion of the tour ends; no glass containers allowed on board.

• Check in 30 minutes before departure at Waianae Small Boat Harbour; free cancellation is available up to 48 hours before the tour date.