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    One Ocean Diving

    4.9 • 2.3K 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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    Open Ocean Shark Snorkel with Researchers

    Swim alongside sharks in open ocean while supporting marine conservation research.

    From$170person

    Review summary

    4.9
    Excellent
    2.3K reviews•Google Maps

    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 3
    5/5

    Absolutely amazing! The crew was knowledgeable and friendly, and we felt safe the entire time. We will definitely do it again! Thanks for the experience of a lifetime!

    Photo of Meagan O

    Meagan O

    April 4, 2026

    Review 1 of 1
    5/5

    Absolutely amazing! The crew was knowledgeable and friendly, and we felt safe the entire time. We will definitely do it again! Thanks for the experience of a lifetime!

    Photo of Meagan O

    Meagan O

    April 4, 2026