Oahu Dolphin Watching Catamaran: Snorkel, Water Slide and Lunch

QUICK ANSWER
Oahu Dolphin Watching Catamaran: a 3-hour cruise on the double-decker catamaran Poseidon from Waianae Harbor to watch wild spinner dolphins, followed by snorkeling with sea turtles, a 21-foot water slide, paddleboards and lunch.
Price: Adult $179 (tax included); child, ride-along and kama’aina/military rates are on the calendar. If no dolphins are seen, you can rejoin a tour at a discount.
Duration: 3 hours on the water; with Waikiki pickup the day runs from about 10:00am to 5:00pm on the midday tour.
Island: Oahu
Best for: Families and groups who want dolphins, snorkeling and water toys in one trip
Booking: instant confirmation.

WHERE IS THE BEST DOLPHIN WATCHING ON OAHU?
The Waianae coast on Oahu’s west side is home to resident spinner dolphins, and tours from Waianae Harbor see them often. This catamaran watches them from the boat (no in-water dolphin swim), then moves on to a reef for snorkeling.

HOW THE CRUISE RUNS
The tour starts with a traditional Hawaiian oli (chant) for safe passage before the catamaran heads out to find wild spinner dolphins. After watching them, the boat anchors at a west-side snorkel spot with sea turtles and reef fish. On board are a 21-foot water slide, a climbing wall, two paddleboards, kayaks and a large floating mat, plus shade and restrooms.

PRICING
Adult $179 (tax included); child, ride-along and kama’aina/military rates are on the calendar. If no dolphins are seen, you can rejoin a tour at a discount. Prices checked October 2026 on the operator’s own listing; confirm the live rate on the booking calendar.

WHAT’S INCLUDED
– Round-trip transport from Waikiki and Ko Olina
– Lunch and soft drinks
– Snorkel gear and life jackets
– Water slide, paddleboards, kayaks and float
– Restrooms and shade on board

KNOW BEFORE YOU GO
– Self-drive guests check in 30 minutes early at Waianae Small Boat Harbor
– Waianae is about 50 minutes’ drive from Waikiki
– Dolphins are wild; sightings are not guaranteed
– The tour can run long if dolphins are nearby; keep your afternoon free
– Cancellation: Full refund if you call 48 hours before the tour; private charters need 7 days’ notice.

WHO IT’S FOR
Families with kids of all ages and groups who want a full ocean day with dolphins, snorkeling and a water slide, without driving.

BROWSE MORE
See more Oahu boat tours, alongside the wider Oahu collection. Planning ahead? Read shared vs charter boat tours on Oahu. Planning ahead? Read Oahu with kids. Wild dolphins or a park? Read swimming with dolphins on Oahu.