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Swim with dolphins at Big Island, Hawaii

  • Big Island, Hawaii, United States of America (USA)

Last updated: 15 May, 2025

The Big Island of Hawaii offers one of the most soul-stirring marine experiences in the Pacific – swimming with wild spinner dolphins in the crystal waters off Kona’s western coast.

These agile, acrobatic creatures are known for their playful nature, often seen leaping and spinning in mid-air before gliding effortlessly through the sea.

Tours depart from Kona or Kealakekua Bay, venturing into sheltered coves where dolphins rest and socialise. If they choose to engage, you may find yourself drifting beside them, watching their sleek bodies move in unison, listening to their sonar clicks in the water.

The encounter is entirely on the dolphins’ terms – ethical, respectful, and authentic. Along the way, you might also spot green sea turtles, manta rays, or colourful reef fish.

Remember – if you don’t fancy getting in the water, you can stay on the boat or book a ‘watch-only’ tour. It’s still a wonderful day out.

Recommendations

2

Swim with manta rays in Hawaii

  • Kona, Hawaii, United States of America (USA)

Manta ray over divers in Kona, Hawaii

Bucket List Experience

Just of Hawaii’s coast at Kona, is a manta ray ‘feeding station’, rich in plankton, that’s home to resident population of over 240 individuals. Snorkel (5+ years) and/or dive (15+ years) tours run daily, year-round from Kona – but uniquely at night. Tour operators shine lights that attract plankton, and manta rays, to the surface.

Adult price: £92

Min age 5

Good for age: 8+

Duration: 3 hours

Kalalau Trail

  • Kauai, Hawaii, United States of America (USA)

Na Pali coast, Kauai, Hawaii helicopter aerial view. Nature coastline landscape in Kauai island, Hawaii, USA. Hawaii travel.

Bucket List Experience

This heart-stopping trail along the Na Pali Coast of Kauai Island is the US’s wildest hike, an eye-watering scene of rugged valleys, white-sand beaches and waterfalls. For most, it’s 4-miles (one way) to the 300ft-high Hanakapiai Falls. Experienced hikers (with permit) can go 7 miles further to pristine Kalalau Beach to camp overnight.

Good for age: 13+

Duration: 3-6 hours

Logistics

Price from: £65
Minimum age: 6
Age suitable: 6+
When: All year around
Duration: 2.5-4 hours

Getting there & doing it

Tours typically depart from Kailua-Kona or Keauhou Bay, easily reached by car from most resorts on the island’s west coast. Tours last 2.5 to 4 hours and are suited to confident swimmers.

The tours are suitable for ages 8 and up, though age limits vary by provider. Children must be strong swimmers and accompanied by an adult. Flotation aids are typically provided for added safety. Most outfitters provide snorkel gear, wetsuits and flotation devices. Bring swimwear, a towel, reef-safe sunscreen, and water.

Trips include boat travel to offshore reefs or calm coves, where dolphin encounters may occur. Some tours also include snorkelling at reef sites or stops at sea caves. All of the activities are conducted under strict wildlife interaction guidelines, ensuring minimal impact on both the dolphins and the environment.

When to do it

The best time to swim with dolphins on the Big Island is during Hawaii’s dry season, from May to October, when seas are calm and visibility is clearest. While dolphins are present year-round, weather and sea clarity make the dry season the most rewarding time for encounters.

Spinner dolphins are most active and visible in the early morning, just after sunrise, as they return to sheltered bays to rest after night feeding. Tours typically leave between 6am and 8am for the best sightings and tranquil sea conditions. Avoid midday hours when dolphins retreat into deeper waters.

Who to go with: organised tours

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Our selection of the best Viator tours of this attraction or activity

  • Big Island of Hawaii

* Snorkel Coral Reef at Captain Cook Monument / Kealakekua Bay * Visit Sea Caves, Lava Tubes, Coves & other coastline topography * May encounter Wild Dolphins & Whales * Zodiac RIB navy seal speed boat * Pineapple & water included * Snorkel gear & floatation devices included * Avoid the big crowded boats that take up to 60 people Tour time is NOT EXACT, why? weather conditions, how long you snorkel etc. 2 to 3 hours, 2.5 hour on Average!

Price $85

Min age 5

Rating 4.62 / 5 [1119 ratings]

Tour supplied by:

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  • Big Island of Hawaii

Step aboard this double–decker catamaran, loaded with luxury features to provide you with the most comfortable snorkeling experience on Hawaii Island. Cruise 10 miles to a marine sanctuary teeming with thousands of tropical fish. Bring your suit and towel, everything else is included: island style breakfast, lunch, sunscreen, snorkel gear, flotation toys, 20’ waterslide, bathrooms, showers and a full service cash bar. On board upgrades include wetsuit rentals.

Price $189

Min age 0

Rating 4.77 / 5 [772 ratings]

Tour supplied by:

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  • Big Island of Hawaii

Unique to the Big Island of Hawaii, over a dozen species of whales can be found on the Kona Coast year-round! Join us as we explore the offshore in search of pilot whales, false killer whales, whale sharks, spinner dolphins, sperm whales, and more! Our Hawaiian Adventures crew is passionate about whales, and we pride ourselves on being the whale experts of the Big Island. The ocean provides new opportunities on every tour, so trust the guides who do this every day! Our crew works hard to show you the most wildlife on every trip, and we aim to leave you with a new appreciation for Kona’s whales, wildlife, and vibrant ecosystem. Come winter, spring, summer, or fall, our goal is to show you it all! Departure Times March 24 - December 15: 8:30 AM December 16 - March 23: 7 AM, 11 AM, & 3:30 PM

Price $129

Min age 10

Rating 4.88 / 5 [496 ratings]

Tour supplied by:

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  • Big Island of Hawaii

Drawing on years of experience, our captains and crew will take you up close and personal with the dolphin. As we search for these beautiful creatures in the warm tropical waters off the coast, our crew will share their knowledge about these fascinating creatures, how they live and their role in the ocean’s ecosystem. Nearly every day, year-round we are able to encounter these beautiful animals in their natural habitat.

Price $151

Min age 6

Rating 4.82 / 5 [329 ratings]

Tour supplied by:

Viator Logo
Website >
  • Big Island of Hawaii

* Snorkel Coral Reef at Captain Cook Monument / Kealakekua Bay * Visit Sea Caves, Lava Tubes, Coves & other coastline topography * Encounter Wild Dolphins & Whales * Zodiac RIB navy seal speed boat * Pineapple & water included * Snorkel gear & floatation devices included *Avoid the big crowded boats that take up to 60 people.

Price $99

Min age 4

Rating 4.63 / 5 [130 ratings]

Tour supplied by:

Viator Logo
Website >