Manta Discovery Adventure - Nighttime Snorkel with Manta Rays, Big Island tours & activities, fun things to do in Big Island |

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Manta Discovery Adventure - Nighttime Snorkel with Manta Rays
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Discover the beauty of the majestic manta ray, considered to be one of the most memorable experiences to be had on the Big Island. Watch as these gentle giants glide through the water feeding on plankton which are attracted by underwater lights.

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Manta Sighting Guarantee! (until 2020/12/31)

We are extremely proud of our “Manta View” record being nearly 98%. However, if for any reason we are unable to view Mantas on the day and time you have joined us, we will gladly offer you an opportunity go out a second time at no additional charge on a space available basis. Therefore, we recommend you plan your Manta Discovery Adventure early in your vacation.

- Based on space availability.
- This non-transferable offer allows you to reschedule your tour for free; it does not entitle you to a refund.

If you only have time for one snorkel trip while visiting the Big Island this is the one to choose. Swimming with the manta rays is often considered one of the most memorable experiences to be had on the Big Island. Cruise to the mouth of Keauhou Bay, a spot known for having the highest concentration of manta rays in the Hawaiian Islands, where you will spend about 45 minutes in the water with these magnificent creatures. Watch them glide through the water turning and doing somersaults in the beams of light as they feed on plankton.

About the Manta Rays

The coastal Manta Ray is among the largest of the ray family and one of the largest fishes in the world. On average their wingspan is 8 ft across but can be as large as 12 ft across. Unlike most other ray species, they do not have any sort of barb or stinger on their tail making them completely harmless. They are a docile animal, very curious by nature and are known to come in close to divers. They are filter feeders, feeding on plankton. They use their giant funnel shaped mouths to scoop plankton as they swoop about the reef. Watching them swim somersaults or barrel rolls is a magnificent sight to see. Having one barrel roll inches from you is the ultimate experience.

How It Works

Once you are in the water, you will be holding onto a floating board outfitted with underwater lights. These lights will draw in the schools of plankton, which is the food source of the manta ray. You float at the surface and simply just watch as the mantas come in to feed on the plankton. Very little snorkeling effort is required. If you like, you will be provided with a pool noodle to help you with keeping your legs floating at the surface as to not disrupt the mantas feeding behavior. For all manta tours, free snorkeling is not permitted as it will disrupt the feeding behaviors of the mantas and possibly scare them from the dive site for the evening.

Boat Information:
Name: Whalesong Kai Mana (Ocean Spirit) Nai'a Nui (Many Dolphins)
Capacity: 12 Passengers 6 Passengers 12 Passengers
Type: Rigid Inflatable Boats  (RIB)
Safety: Lifeguard-certified crew members on board
Accessibility: The boats are not wheelchair accessible
Amenities: Our boats are rigid hull inflatable vessels, they're built for speed in getting us to our destination and back. Boats offer high-speed rides as well as comfort and fun! All of our boats offer shade. There are dry storage, life jackets, and other flotation devices on board. There are no bathrooms on board. With that in mind, we suggest you plan ahead and use the facilities near our check-in location before you depart.
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1 Select a date
2 Select the amount (# of participants, vehicles, hours, etc.)
You can book a maximum of 12.
Adult (Age 13 & over)
USD 106.36
USD 106.36
Child (Age 8-12)
USD 95.86
USD 95.86
Quick Confirmation USD 0.00 USD 0.00
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*The price is subject to change depending on the start time or add-on(s) you choose.
Adult (Age 13 & over)
USD 106.36
USD 106.36
USD 112.57 6%off
USD 112.57 6%off
Child (Age 8-12)
USD 95.86
USD 95.86
USD 101.20 5%off
USD 101.20 5%off
GE Tax and Harbor Fee included
  • Duration: 1.5 hour(s)
  • Available: Daily
  • Pick-up: Not available
  • Inclusion: Hot tea / Short-Sleeve Wetsuit Tops / Snorkel and Mask / Flotation devices
Package detail / Schedule
Schedule & Location
  • Schedule
  • Check-in
    Time & Location
  • Check-out
    Time & Location

  • 18:30 Check-in at Keauhou Bay
  • 18:30 Manta Discovery Adventure (1.5 hrs)
  • 20:00 Check-out at Keauhou Bay
    • This activity is not wheelchair accessible.
    • If less than 4 participants are booked, the activity may not operate.
    • Children 8 years old and above can participate in this activity.
    • Guests must be below 280 lbs (127 kg) to participate in this activity.
Required Items to Bring & Attire
    • Camera
    • Towel
    • Swimsuit
    • Change of clothes
Requirement(s) - Others
    • Each guest should be comfortable swimming in the ocean.
    • Minors are required to have a parent or guardian sign their liability waiver.
    • Participants are required to sign a liability waiver in case of injury or natural disaster.
Additional Note(s)
    • The activity schedule is subject to change or cancellation due to weather or traffic conditions.
Booking Requirements (# of participants, vehicles, hours, etc.)
    • You can book a maximum of 12.
Activity provider
Please click HERE to send an inquiry about this activity
Payment/Cancellation policy
Payment type
Credit card payment
Cancellation Policy
  • Any cancellations made after 18:00 local time, 2 business days prior to the activity will be subject to a charge of 100% of the total amount.
USD 106.36
USD 106.36

Taxes & fees included

1% Reward Points

Pick-up Not available
Duration 1.5 hour(s)
Availability Daily
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Hawaiian Islands

Big Island Categories

USD 106.36
USD 106.36
Manta Discovery Adventure - Nighttime Snorkel with Manta Rays