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    One Ocean Diving

    One Ocean Diving

    4.9 • 2.7K reviews
    Haleiwa, HI

    Founded by marine biologist Ocean Ramsey and underwater photographer Juan Oliphant, One Ocean Diving offers respectful, research-backed encounters with Hawaii’s sharks. Each small-group snorkel is led by a trained scientist who sh...

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    Book One Ocean Diving

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    Snorkel With Sharks in Haleiwa

    Snorkel with sharks and support marine conservation research

    From$170person

    Review summary

    4.9
    Excellent
    2.7K reviews•Google Maps
    2,471
    41
    22
    18
    38

    With an impressive near-perfect rating from thousands of divers, this shark diving operation clearly delivers something special. Reviewers consistently describe their experiences as "amazing" and "incredible," with many admitting they were initially nervous but found the whole adventure surprisingly calm and peaceful. The crew earns praise across the board for being friendly, welcoming, and genuinely passionate about what they do. Names like Matthew, Hayley, Tyler, Liko, Faith, and Kaitlyn pop up repeatedly, with guests appreciating how informative and safety-focused the guides are throughout. The conservation-minded approach resonates strongly with visitors, who love learning about shark protection while experiencing these animals up close. Safety briefings are thorough and detailed, with the company's 17-year perfect safety record putting anxious divers at ease. Multiple guests mention feeling completely safe despite any initial fears, and several have returned for second dives. The comfortable boat and professional handling from start to finish round out what reviewers describe as a dream-come-true, once-in-a-lifetime experience that they'd recommend without hesitation.

    What people are saying

    Review 1 of 5
    5/5

    Swimming with the sharks with this crew was Amazing!! They are professional, energetic, kind and fun! We got to see a Tiger Shark! Hayley Addison was also such a great leader and a comfort in the water! Will definitely do it again!

    Photo of Alissa Krebs

    Alissa Krebs

    July 7, 2026

    Review 1 of 1
    5/5

    Swimming with the sharks with this crew was Amazing!! They are professional, energetic, kind and fun! We got to see a Tiger Shark! Hayley Addison was also such a great leader and a comfort in the water! Will definitely do it again!

    Photo of Alissa Krebs

    Alissa Krebs

    July 7, 2026