Glow of the Deep: Night Snorkeling with Manta Rays

Giant manta rays sweep through the dark water with open mouths, rolling and banking as they feed on plankton drawn to the boat’s lights. You float at the surface, holding a noodle or the edge of a light board, with the animals passing remarkably close below you.

I like the sunset boat ride, which turns the trip into more than a single nighttime activity. I also like the simple setup: a wetsuit, snorkel gear, flotation support, and a bright light board let you watch the mantas without chasing them. The main concern is comfort. The water can feel very cold, the boat may be full with up to 30 people, and anyone prone to seasickness should prepare before departure.

Key points to know before booking

• Mantas feed beneath a light board: You stay mostly still while the rays circle and roll through the illuminated water.
• About 45 minutes in the water: The main encounter takes place in 30 to 35 feet of water, with guides nearby.
• A sunset is included on early departures: The boat’s upper deck gives you a fine view of the Kona coast as daylight fades.
• You must know how to swim: Flotation noodles help, but this is still an open-ocean snorkel.
• The $80 price is competitive: Gear, wetsuit, snacks, water, guides, and the manta guarantee are included.
• Prepare for cold and motion sickness: Bring warm clothes for the ride home and consider seasickness medicine before boarding.

Why Kona’s manta encounter feels different

Kona’s manta experience is not built around feeding the animals or pursuing them with a boat. The guides place bright lights in the water, which attract microscopic plankton. The mantas then come to the light on their own terms.

That matters. You are not swimming after a frightened animal or trying to touch it. You float in one place and watch the manta rays make repeated passes. Their broad wings fold and turn with surprising grace, and their open mouths can look dramatic even though these animals have no teeth or barbs.

The mantas seen here can have wingspans from 4 to 12 feet and weigh between 400 and 1,200 pounds. Size is difficult to judge at night, but a large manta moving directly toward your face makes the scale clear very quickly.

The best moments come when a ray performs a slow back roll below the light board. It may rise almost vertically, turn, and glide away before returning for another pass. You might also see several mantas working the same patch of water, which creates a steady show rather than a single brief sighting.

A manta sighting is guaranteed, with a voucher for another tour if the animals are not seen. That does not guarantee a certain number of rays, perfect water conditions, or an animal brushing past you. It does provide useful protection against the biggest disappointment: making the trip and seeing nothing.

Checking in at Honokohau Harbor

You meet at Bite Me Sport Fishing, 74-425 Kealakehe Parkway, number 1, in Kailua-Kona. Hotel pickup and return are not included, so you need to arrange your own transportation to the harbor.

Allow enough time to find the office, park, check in, and get fitted for equipment. Mobile tickets are accepted, and the activity is offered in English.

The departure time changes during the year because the operators plan around sunset. The listed times are:

• January 1 through March 31: 5:30 p.m. and 8:30 p.m.
• April 1 through September 31: 6 p.m. and 9 p.m.
• October 1 through December 31: 5 p.m. and 8 p.m.

The September 31 date is clearly a calendar error in the supplied schedule, so confirm your exact time directly with the operator. You are placed in whichever departure has room, and the instructions advise calling 24 hours ahead to confirm.

This is an important detail. The early trip gives you a sunset from the boat, while the later trip spends more of its outing in darkness. The later departure may also feel colder on the return ride because you are wet and out after sunset.

The boat ride and sunset from the upper deck

The boat is described as spacious, with a top observation deck, a large cabin, and an onboard bathroom. The ride takes you offshore to the manta site, and one account puts the run from shore at about 20 minutes. The exact travel time depends on the selected site and ocean conditions.

The northern manta site is used most of the time, according to the operator. There are two main areas, and the captain may choose the southern site when swell conditions or manta activity make it the better choice. This can affect the ride length and the feel of the trip.

The upper deck is the place to be for the early outing. Kona’s coast catches the last warm light, and the sunset gives you a pleasant pause before the practical business of wetsuits and masks begins. Bring a light jacket or sweatshirt for the boat, especially if you are sensitive to wind.

The boat can carry up to 30 people. That is a moderate group for a boat outing, but it is not an intimate charter. With a full group, the boarding process and preparation can feel busy. The size also matters once everyone gathers around the light board in the water.

If you suffer from motion sickness, do not wait until you feel ill. Several people have had trouble even when the ocean was not especially rough. Take appropriate medication before boarding if you normally need it, and ask the operator about the motion sickness products available at its shop. The boat provides water and dry snacks, but it is not presented as a full meal.

Getting ready for the night snorkel

After reaching the site, you put on a wetsuit jacket, mask, snorkel, and flotation support. The equipment package includes wetsuits, snorkel gear, swimming noodles, and flotation devices, along with bottled water and snacks.

The wetsuit jacket serves two purposes. It helps retain warmth, and it adds buoyancy. You still need to be comfortable in open water, though. The stated requirement is that you must know how to swim, and children must be accompanied by an adult.

Children younger than five must bring their own life vest. For children who are nervous or weak swimmers, a properly fitted personal snorkel vest may provide extra confidence, though it does not replace the swimming requirement.

The entry is likely to be the most stressful part for first-time snorkelers. The water is dark, the boat may move beneath you, and the light board can look farther away than expected. Guides are in the water and are meant to supervise the group, but listen carefully to the safety briefing and tell the crew if you are anxious before entering.

A ride-along option is available for people who cannot swim or prefer to stay on the boat. Confirm the availability and price of that option before booking, since the supplied information does not give a separate ride-along fare.

The 45-minute manta show

The central part of the activity lasts about 45 minutes. You float in 30 to 35 feet of water, within sight of the shoreline, while the guides position the illuminated board.

The bright light attracts plankton. The manta rays follow the food, not the swimmers, so the most rewarding approach is to stay calm and avoid kicking after them. Let the crew position you, keep your face in the water, and watch the dark shapes grow larger as they approach.

The rays may pass beneath you, turn on their sides, or make looping movements as they feed. Some nights bring only a few animals. Other outings have produced sightings of 10 to 14 mantas, and dolphins have occasionally appeared during the broader boat trip. Those numbers are luck, not a promise, but the guaranteed sighting gives the activity a solid safety net.

The guides explain manta biology and behavior during the outing. Crews have included names such as Lena, Mattie, Allie, Rory, and Justice, although you should not assume the same people will be working on your departure. The strongest praise goes to the crew’s calm help with nervous swimmers and their clear interest in protecting the animals.

You should not expect a hands-on animal encounter. The interaction is passive and respectful. A manta may come within inches of your face, but touching is not part of the activity and should not be encouraged.

The light board itself is practical rather than luxurious. Its job is to put light beneath you and create a viewing area. On a busy night, several people may hold on close together, which can make the experience feel less peaceful than the graceful animals suggest.

Group size, safety, and comfort

A maximum of 30 participants is listed, and the boat may operate at or near that limit, particularly during popular holiday periods. A full boat helps keep the price down, but it also means less personal space and more movement around the entry point.

The crew includes lifeguard-certified staff, and the operator says it trains for emergency situations. Guides are placed around the manta board so swimmers have nearby supervision. That is reassuring, but you should still be honest about your swimming ability and your health.

Seasickness is the biggest practical concern. An ill passenger can make the boat ride unpleasant for everyone, and vomiting in the water may affect the manta activity for a time. If you are susceptible, prepare before you arrive rather than relying on the crew to solve the problem after it starts.

Cold is the other issue. The water temperature varies by season and personal tolerance, but January outings have felt very cold to some people, while others found December water comfortable. You wear a wetsuit jacket, yet you can still become chilled after 45 minutes floating in place.

Pack dry, warm clothing for the return trip. A sweatshirt, jacket, and towel are more useful than a swimsuit cover-up. Keep your phone in a waterproof case if you want pictures, but remember that the operator’s bright lights and the dark water can make photography tricky.

Is $80 a good value?

At $80 per person, this is one of the more affordable ways to see Kona’s manta rays. The fee includes the boat trip, professional guide, snorkel gear, wetsuit equipment, flotation noodle, bottled water, snacks, and the manta sighting guarantee.

That package makes the price attractive for families and first-time snorkelers who do not want to rent every piece of gear separately. The sunset view adds value to the early departure, and the boat’s bathroom and cabin are welcome comforts.

The tradeoff is that you are buying a shared boat experience, not a private outing. A full group can make the water setup feel crowded, and the snacks are basic dry items rather than dinner. Hotel transport is also not included.

I consider the price fair if your priority is getting into the water with manta rays and you accept a practical, group-based setup. If you want quiet space, a smaller passenger count, or a more polished onboard service, a higher-priced operator may suit you better.

Who should book this Kona manta swim?

This outing fits confident swimmers, families with older children, couples seeking a memorable evening, and solo visitors who want a major Kona experience without paying for a private charter.

It is especially good for people who are nervous about manta rays but willing to try. The animals are gentle, the encounter is passive, and the guides provide flotation support. Several crew members have earned praise for helping hesitant swimmers reach the light board and return safely.

It is less suitable for anyone who cannot swim, anyone who dislikes boats, or anyone who becomes badly seasick. You can ride along without entering the water, but confirm the arrangement before booking.

I would also think carefully if you dislike crowded group activities. Thirty people is not an enormous number on a boat, but it can feel tight when everyone is changing, entering the water, and holding the same illuminated board.

Booking, cancellation, and final advice

Book ahead if your dates are fixed. This experience is booked an average of 22 days in advance, which suggests that popular sunset and holiday departures can fill early.

You can cancel for a full refund up to 24 hours before the start time. Inside that window, changes and refunds are not accepted. Poor weather or failure to reach the minimum number of participants can lead to cancellation, in which case you are offered another date or a full refund.

Should you book Glow of the Deep?

Yes, if you want the manta encounter itself and can handle an open-ocean snorkel. The chance to float above a light board while giant rays roll beneath you is unusual, direct, and memorable. The sunset option, included gear, fair price, and manta guarantee strengthen the case.

Go in prepared. Confirm your departure time, arrive ready for a busy harbor check-in, take seasickness precautions, and bring warm clothes for the ride home. If you need a quiet boat, polished service, or lots of space, compare smaller operators before committing.

For most capable swimmers, this is a strong-value way to see Kona’s manta rays. The animals are the star, and on a good night they make the rest of the evening easy to forgive.

FAQ

Where does the manta tour begin?

The meeting point is Bite Me Sport Fishing at 74-425 Kealakehe Parkway, number 1, Kailua-Kona, Hawaii 96740. The activity ends back at the same meeting point.

How long does the activity last?

The total experience lasts about 2 hours and 30 minutes. The manta snorkeling portion lasts about 45 minutes.

What time does the tour depart?

Departure times change with the sunset. The listed times are 5:30 p.m. and 8:30 p.m. from January through March, 6 p.m. and 9 p.m. from April through September, and 5 p.m. and 8 p.m. from October through December. Call 24 hours before departure to confirm your assigned time.

Do I have to enter the water?

No. You can choose a ride-along option and enjoy the boat ride and scenery without snorkeling. Confirm the ride-along details before booking.

Do I need to know how to swim?

Yes. Swimming ability is required to participate in the snorkel portion.

What equipment is provided?

The tour provides snorkel equipment, wetsuit gear, flotation devices, and swimming noodles. Bottled water and snacks are also included.

Are children allowed to participate?

Children may participate when accompanied by an adult. Children under five must provide their own life vest.

How deep is the water?

The manta site is in approximately 30 to 35 feet of water, or about 9 to 10 meters.

Are manta sightings guaranteed?

Yes. If no manta rays are seen, you receive a voucher for an additional tour.

What happens if the weather is poor?

If poor weather causes the activity to be canceled, you are offered a different date or a full refund. A cancellation caused by insufficient numbers also comes with an alternative or full refund.

Is hotel transportation included?

No. Hotel pickup and drop-off are not included, so you must make your own way to the harbor meeting point.

Can I cancel for a full refund?

Yes. You must cancel at least 24 hours before the experience start time for a full refund. Cancellations or changes within 24 hours are not accepted for a refund.