What You See on the Maui Submarine 2026: Wreck, Reef & Fish

Booking choice: The Atlantis submarine dive, from $160 per person. Check dates Compare the options below

Most people book the Maui Atlantis Submarine expecting coral and tropical fish, and they get both. What surprises many is that the star of the dive is man-made: the Carthaginian II, a 1920 steel schooner that Atlantis sank off Puamana, south of Lahaina, in 2005 to create a reef.

This guide covers what you will see, how deep the sub goes, which animals guests report and how to get photos through a porthole.

The quick answer

You see the Carthaginian II wreck, the natural coral reef around it and the reef fish that live there, at about 100 to 130 feet. Guests this summer report sharks, a stingray, eels, sea stars and dolphins, but wildlife is never guaranteed. It is not Molokini, and you do not swim.

A school of red and yellow goatfish swimming through the coral-crusted frame of a sunken ship — Fish shelter inside the frames of the Carthaginian II.

What do you see on the Maui Atlantis submarine?

A natural coral reef, reef fish and the wreck of the Carthaginian II, seen through large portholes along both sides of the sub.

The dive site lies off Puamana, just south of Lahaina. The crew narrates as the pilot works along the reef and around the wreck, naming the fish as they appear. Many guests name the sunken ship as their favorite part.

The Atlantis submarine gliding past the upright hull of a sunken ship on the sea floor — The Maui sub passing the Carthaginian II on the sand.

What is the Carthaginian II?

A steel schooner built in Kiel, Germany, in 1920, which later served Lahaina as a floating whaling museum.

It began life as the schooner Mary and later worked as a Baltic cement freighter. The Lahaina Restoration Foundation bought it in 1973 and opened it as a whaling museum ship from 1980. It is about 98 feet (30 m) long.

Want to see the wreck for yourself? The dive cancels free up to 24 hours before.

Check dates for the Atlantis submarine dive

Why was the ship sunk on purpose?

To create an artificial reef: Atlantis and the Lahaina Restoration Foundation scuttled it on 13 December 2005, about half a mile off Puamana Beach Park.

Atlantis spent about $350,000 on environmental studies and cleaning before the sinking. The ship settled upright on a sandy bottom in about 97 feet of water. Before that, the operator says, the spot was mostly bare sand with very little marine life; today the hull is home to coral and resident fish.

A coral-covered wooden shipwreck on white sand with a reef shark and a school of fish — Illustration: a wreck on sand becomes a home for fish and sharks.

How deep does the submarine go?

About 100 to 130 feet: Atlantis says "more than 100 feet", and the Maui News reported a maximum of 130 feet at the June 2026 restart.

Guests have posted depth gauge readings of 135 to 150 feet, so it varies a little from dive to dive. Because the wreck sits on the sand at about 97 feet, you see it from the side as well as from above. The cabin is air-conditioned, so bring a light jacket.

What wildlife might you see?

Reef fish on every dive; guests in 2026 also report reef sharks, a stingray, eels, sea stars, sponges and even dolphins.

Nothing is guaranteed. One guest in August noted that they did not see much in the way of big creatures, and one July reviewer felt there was "nothing to see" beyond fish and a sunken boat. Most reviews are far happier, but go for the reef and the wreck, and treat sharks as a bonus.

A school of yellow reef fish over coral with the lights of the submarine glowing behind — Schools of reef fish swim past the sub's lights.

Can you see whales from the submarine?

Sometimes, in season: humpbacks are in Maui waters roughly December to May, and you may spot them from the shuttle boat on the way out.

Atlantis notes that a whale could even pass while you are underwater, but that is luck. For a proper whale day, a two-hour whale watch with a hydrophone leaves from the same harbor.

Here in whale season? The Lahaina whale watch lowers a hydrophone so you can hear the humpbacks sing.

★ 4.8 235 reviews · 2 hours · from $70

Explore the Lahaina whale watch

Is the Maui submarine dive at Molokini?

No. The sub dives off Puamana, south of Lahaina on the west side; Molokini is a crater off South Maui reached by snorkel boats from Maalaea and Kihei.

Molokini is home to more than 200 fish species, but you see it by snorkeling, not from a sub. Compare the two in submarine vs snorkeling in Maui.

Want the wreck and the reef without getting wet? Check the dive times for your week.

Check dates for the Atlantis submarine dive

How do you take good photos through the portholes?

Turn the flash off, hold the lens close to the porthole glass, and shoot when the fish come near the sub's lights.

At depth, colors fade toward blue, so photos look bluer than the view. You do not choose your side of the sub; guests say the crew tries to point things out to both sides, and one felt the port side saw things first.