Marine Life Tours & Cruises: Best Big Island Deals: Big Island Discount Tours, Activity Coupons & Cheap Things to Do on Big Island

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Marine Life Tours & Cruises: Find exclusive Big Island deals & the best prices on Big Island activities. For cheap things to do on Big Island, book online and save with Big Island tour discounts, coupons and special offers only available at HawaiiActivities.com.
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    Availability varies by date for all activities.

  1.  
    Explore the mystical underwater world when you set out to the beautiful Kona Coast and swim with manta rays in the moonlit waters of Keauhou Bay! See the graceful giants up-close on this once in a lifetime manta ray night snorkel adventure.

    From USD143.82

    Mon, Tue, Wed, Thu, Fri, Sat
    2 hour(s) (evening)
    13%
    OFF
  2.  
    Witness the best of Kona on this bucket list experience that includes a manta ray snorkel tour and sunset cruise. Swim with giant mantas rays. Guaranteed to create memories that will last a lifetime! Advanced bookings are recommended.

    From USD133.03

    Daily
    3 hour(s) (evening)
    5%
    OFF

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