Booking choice: The Kona submarine, from $160 per person. Check dates Compare the options below
The Atlantis submarine is the only way to sit dry at 100 feet and watch fish swim past your window. For non-swimmers, older travellers and families with young children, that is worth a lot.
For a confident snorkeller who wants bright coral, the maths is different. This guide sets out both sides, using what guests actually wrote in 2026.
The quick answer
Yes, if you cannot or do not want to snorkel or dive: it is a genuine submarine ride to about 100 feet, rated 4.7 from 759 reviews. It is weaker value if you are a strong snorkeller chasing colourful coral, which lives in shallow water. The main complaints are grey-looking coral at depth, a low porthole in a tight cabin, and few fish on some dives.
What is the short verdict?
Worth it for most families, non-swimmers and first-timers; skip it if you snorkel well and mainly want colour.
At about $160 for 45 minutes underwater (about $144 during the sale that ends 15 October 2026), it is not cheap. What you pay for is the experience of a real dive: the hatch closing, the gauge ticking past 100 feet, fish and wrecks outside the window.
Sounds like your kind of day? Check dates while the sale fare is showing.
Check dates for the Kona submarineWho should book the Kona submarine?
Anyone who wants to see the deep reef without getting wet, as long as they can climb a ladder.
- Non-swimmers and nervous swimmers: this is the deep reef without the water.
- Families with children 36 inches and taller: there is no minimum age.
- Older travellers who can manage a near-vertical ladder of about ten steps.
- Cruise passengers: the check-in is beside the tender pier.
- Anyone curious about riding a real submarine.
Who should skip it?
Strong snorkellers after bright coral, wheelchair users, and anyone uneasy in enclosed spaces.
The submarine is not wheelchair accessible: boarding means climbing down a near-vertical ladder. The cabin is a long tube with a bench down the middle, and although guests describe it as comfortable, some find it tight. If you snorkel well, a Kealakekua Bay trip shows you more colour for a similar price.
What do unhappy guests complain about?
Three things come up: grey-looking coral at depth, cramped seats with a low porthole, and few fish on some dives.
One guest in September 2026 found the seating cramped and the porthole "too low", with poor visibility. Another expected coloured coral from the adverts and found it "all black or grey". A July 2026 reviewer saw "only little fish, only little coral". These are a minority of reviews, but they tell you exactly what to expect: this is a dim, blue, real-world dive, not an aquarium.
What do happy guests love?
The fish at the window, the two wrecks, the crew's narration and the calm, air-conditioned cabin.
Reviewers describe puffers swimming up to the glass, moray eels, a small shark and dolphins on the shuttle ride. Several mention near-private dives on quiet days, and one couple had the whole submarine to themselves in July 2026.
Want the wrecks and the depth for yourself? The dive leaves four times a day from Kailua Pier.
Explore the Kona submarineSubmarine or glass-bottom boat?
The submarine goes to 100 feet and past wrecks; the glass-bottom boat stays at the surface over the shallow reef for less than half the price.
| Kona submarine | Kona glass-bottom boat | |
|---|---|---|
| From | $160 | $72 |
| Time | About 45 min underwater, 1.5 h total | 50 minutes |
| Depth | About 100 feet | Surface, over shallow reef |
| Restroom | No | Yes, on board |
| Youngest | 36 inches tall, any age | Infants on a lap |
| Rating | 4.7 (759) | 4.6 (531) |
Is the glass-bottom boat really better value?
For toddlers and tight budgets, yes; for the wow factor, no.
The boat leaves the same pier and gives you 50 minutes with a naturalist, a restroom and cold drinks. But it has its own critics: one guest noted the viewing is through 2 by 3 foot glass panels at each seating area, another that the reef was mostly lava rock with little colour. Think of it as a gentle look, not a dive.
Travelling with a baby or on a budget? The glass-bottom boat gives you 50 minutes over the reef from the same pier.
Explore the Kona glass-bottom boatHow do you get the most out of the dive?
Set your expectations to blue, book a sunny day if you can, and watch the window rather than your phone.
More light reaches the reef on a bright day. Arrive on time for check-in, and take a seasickness remedy if the shuttle ride worries you. Read what you really see from the Kona submarine before you go, so the colours do not surprise you.
Decided it is for you? The ticket cancels free up to 24 hours before.
Check dates for the Kona submarineFrequently asked questions
Is the Atlantis submarine in Kona a scam?
No. It is a real battery-powered passenger submarine that dives to about 100 feet, rated 4.7 from 759 reviews. It simply cannot show bright colours at that depth.
Is the Kona submarine claustrophobic?
Some guests find the cabin tight, but it is air-conditioned and bright, and every seat faces a large porthole. If enclosed spaces really bother you, choose the glass-bottom boat.
Is the submarine better than snorkelling?
It is different. Snorkelling shows brighter colours in shallow water; the submarine shows the deep reef and wrecks without getting wet.
Ready to book
Choose your dive
Free cancellation up to 24 hours before on every option. Prices are from-prices in USD and move with the season.
Atlantis Kona Submarine Adventure
- Sightseeing shuttle boat from Kailua Pier to the dive site, about 5 minutes each way
- About 45 minutes underwater in the 48-passenger submarine, down to roughly 100 feet
- Live English narration by the naturalist; audio in Japanese, Mandarin, Spanish and Korean
Kona Glass-Bottom Boat Reef Tour
- 50-minute cruise on a 36-foot glass-bottom boat over the Kailua Bay reef
- Live commentary from a naturalist guide
- Water, soda and ginger ale, and a restroom on board
Kealakekua Bay Morning Snorkel Cruise
The brightest reef colours, about 2.5 hours in the water
