Written by the Maui Snorkeling Team Molokini Tour Operator since 1985 | Maʻalaea Harbor | USCG-licensed captains
Last updated June 2, 2026
Quick answer: Molokini Crater is a protected, boat-access-only volcanic islet about 3 miles off South Maui. Visitors cannot land on the islet, and snorkel tours use established moorings to protect the reef. Most visitors see Molokini from the boat and snorkel inside the crater when ocean conditions allow.
Molokini Crater at a Glance: Molokini is a crescent-shaped volcanic islet (the rim of an extinct crater) in the âAlalÄkeiki Channel between Maui and KahoÊ»olawe. Itâs protected as a Marine Life Conservation District and a State Seabird Sanctuary, which is why boats use established moorings (no anchoring) and entry onto the islet is prohibited.
Location: About 3 miles offshore of South Maui
Access:Boat only (no shore entry)
Protection: MLCD + Seabird Sanctuary (DLNR)
On-islet entry:Prohibited
Moorings: Day-use moorings; no anchoring when moorings are established
Molokini is often called a crater, but itâs actually a rare geological formation known as a tuff cone, a type of volcanic vent formed by explosive interactions between magma and seawater. Rising hundreds of feet from the ocean floor, Molokiniâs unique shape creates a variety of microclimates within a small stretch of reef. These diverse conditions support an impressive ecosystem, home to dozens of hard coral species and a high diversity of tropical reef fish within its sheltered crescent.
Where Is Molokini Located?
Molokini Crater is a crescent-shaped volcanic islet located about three miles off Mauiâs southwest coast, between MÄÊ»alaea Harbor and the island of KahoÊ»olawe. Accessible only by boat, this partially submerged crater rises from the ocean floor to form a natural marine sanctuary. Most snorkeling and diving tours to Molokini depart from MÄÊ»alaea Harbor or Kihei Boat Ramp, making it an easy half-day adventure for South and Central Maui visitors. The craterâs curved shape creates a protected inner lagoon ideal for snorkeling, while its outer âback wallâ drops steeply into deep blue water popular with scuba divers.
Why Molokini Can Be So Clear
Molokiniâs offshore location and protected inner crescent can create excellent visibility when ocean conditions cooperate. Because itâs still open ocean, wind and swell can change the surface quickly, so comfort and clarity vary day to day.
For the best time of day, trade winds, wind/swell patterns, marine forecast tips, what to bring, and beginner guidance, read our Molokini Snorkeling Guide.
Only permitted commercial operators may use established moorings
Stay at least 10 feet from sea turtles
Stay at least 50 feet from Hawaiian monk seals and 150 feet from mother seals with pups
Stay at least 50 yards from dolphins and small whales, and 100 yards from humpback whales
Use reef-safe sunscreen and avoid standing on coral or stirring up sediment
These guidelines help keep Molokini Crater pristine for future generations of snorkelers and divers.
History And Conservation
Molokini is the rim of an ancient volcanic cone formed when magma met seawater, and it also holds cultural significance in Hawaiian tradition.
Modern protection is a major part of Molokiniâs story. Today, Molokini is managed as a Marine Life Conservation District and a State Seabird Sanctuary to help protect reef life and seabirds, with managed visitation and established moorings.
Molokini Wildlife You May See Above and Below Water
Molokini Crater is protected as both a Marine Life Conservation District and a State Seabird Sanctuary, so wildlife viewing can happen in two places: below the surface while snorkeling and above the water from the boat.
Wildlife Type
Below Water at Molokini
Above Water at Molokini
Common reef fish
Butterflyfish, parrotfish, surgeonfish, and triggerfish are some of the colorful reef fish snorkelers may see around the coral and rocky reef structure.
From the boat, you may notice fish activity near the surface when birds are feeding or when small baitfish gather near the crater.
Hawaiʻi state fish
The humuhumunukunukuÄpuaÊ»a, HawaiÊ»iâs state fish, is a type of triggerfish and may be seen around reef areas inside the crater.
This fish is usually seen while snorkeling, not from above the water.
Coral reef life
Hard corals, reef ledges, sand patches, and basalt boulders create habitat for many fish and small marine animals.
The craterâs crescent shape and rocky rim are visible from the boat and help protect the reef area when conditions are calm.
Lucky sightings
Spotted eagle rays, green sea turtles, and rare Hawaiian monk seals are possible but never guaranteed.
You may spot seabirds circling, gliding, or resting near the islet. Wildlife sightings vary by season, weather, and ocean conditions.
Winter wildlife
During whale season, snorkelers may sometimes hear humpback whale songs underwater, even when whales are not visible nearby.
Humpback whales are often spotted from the boat during winter trips to and from offshore snorkel sites.
Seabirds
Seabirds are best viewed above the surface, although some may feed over the water when fish are active near the surface.
Look for Ê»iwa, also called great frigatebirds, Ê»uaÊ»u kani, also called wedge-tailed shearwaters, Ê»ou, also called Bulwerâs petrels, and noio, also called noddies.
Best viewing tip
Float calmly, move slowly, and avoid chasing fish or blocking an animalâs path. The quieter you are, the more natural behavior you may see.
Scan the crater rim and open sky from the boat, especially during calm moments before or after snorkeling.
Protection reminder
Never touch coral, feed fish, chase wildlife, or stand on the reef. Give turtles and other marine animals plenty of space.
Molokini is a protected seabird sanctuary, and landing on the islet is prohibited. Enjoy the birds and crater views from the boat.
Note: Wildlife at Molokini is wild and never guaranteed. The best sightings usually happen when ocean conditions are calm, visibility is good, and snorkelers give animals plenty of space.
Great experience and a great crew. Swam with turtles and lots of amazing fish. Highly recommend.
Jared F.
★★★★★
Awesome experience, especially for the first time snorkeling! Amazing, affordable pictures with sea turtles! Great crew that you can tell love their jobs and care about their customers.
Delaney S.
★★★★★
The crew was great, and the food was good! Highly recommend for your Maui snorkel adventure!
Dora O.
★★★★★
Maui Snorkeling made our first snorkeling experience absolutely amazing and unforgettable!! Captain Greg and his team made sure we felt safe and offered tons of advice to help us have a wonderful time!! We saw sea turtles, dolphins, and so many different types of fish!! You wonât regret booking with them!!
Brady P.
★★★★★
This was a good trip. The crew was great, and I felt they maximized our time in the water (both the amount of time and the quality of experience). The photographer on board took great pics available to purchase at the end. Small company well worth supporting. I would book with them again.
Crystal R
★★★★★
What a fun, exciting day. First time snorkeling, and we were on our Honeymoon. This crew was so great with us, did the snorkeling class, and they were there to assist with everything. They were active in the water and also pointed out great spots for us to snorkel. They were very entertaining and gave us lots of history on Maui and other islands (very interesting) during the ride out and back in. The photographer on board was taking photos, and we had the option to purchase our photos, which was great for us; he got some awesome shots. Highly recommend Maui Snorkeling!!
No, Molokini Islet is a state seabird sanctuary. Activities on the islet require a DLNR permit, so tours snorkel from the boat in the surrounding waters.
Molokini is protected as a State Marine Life Conservation District and State Seabird Sanctuary. Boats use established moorings, and anchoring on coral is prohibited. Never touch coral or wildlife. Stay at least 10 feet from sea turtles, 50 feet from Hawaiian monk seals, 150 feet from mother seals with pups, 50 yards from dolphins and small whales, and 100 yards from humpback whales.
Expect colorful reef fish and coral gardens inside the crater. Green sea turtles may cruise through, and you might spot eagle rays on lucky days (wildlife is never guaranteed). In winter, you may even hear humpback whales offshore.
Molokini is boat-only accessâthereâs no beach or shoreline entry and no public facilities on the islet. Visitors typically go with a licensed, permitted commercial operator that uses established moorings.
Molokini is a crescent-shaped volcanic islet about 3 miles off South Maui, in the âAlalÄkeiki Channel between Maui and KahoÊ»olawe. Itâs offshore and only accessible by boat.
Molokini is the rim of an extinct volcanic crater (a rare formation often described as a tuff cone). Its crescent shape creates a more sheltered inner cove and a much deeper outer âback wall,â which is why conditions and activities can differ depending on where you are in the crater.
No. There are no restrooms, food stands, or facilities on the islet. Any bathrooms, shade, drinks, or snacks are provided by your boat/operator, so check whatâs included on your tour.
Molokini sits offshore in open-ocean channel conditions, which can involve wind, current, and swell. For most visitors, the safe and standard way to go is by boat with an experienced operatorâand remember that landing on the islet is prohibited.
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