Great Barrier Reef Travel Guide

Great Barrier Reef in 2026 is a reef in early recovery after the worst bleaching on record in 2024. A day on the outer reef from Cairns or Port Douglas now runs A$284 to A$348 with levies and new fuel surcharges, and September beats July for nearly every reason.

Photo: Sarah_Ackerman, CC BY 2.0, via Wikimedia Commons

Updated October 2026

BootsnAll Scorecard

5.3 / 10

The reef scores well on safety and on timing if you dodge July, and poorly on value and independence, because the thing you came for sits well offshore and the boat is the trip.

Value
4
Below the 5 anchor, since an outer reef day costs A$284 to A$348 per adult with levies and surcharges before a dive, and even a ferry to Fitzroy Island is A$109 return, though Cairns dorms from about US$11 soften it.
Getting around
3.5
Nearer the 2 anchor, because every outer reef and cay visit means paying an operator for the boat, though the logistics are easy: boats leave the Cairns Reef Fleet Terminal daily, coaches collect from hotels and Cairns buses cost a flat 50 cents.
Crowds and timing
6.5
Between 5 and 8, as boats run every day of the year and crowding is mostly a July school-holiday problem, while wet-season rain (18.7 inches in February) and cyclones are the real risk.
Safety and hassle
8
At the 8 anchor: regulated operators, free stinger suits and little touting, with the risks being box jellyfish near beaches from roughly November to May, saltwater crocodiles in estuaries and fierce sun.
Food and drink
5
The 5 anchor fits, because lunch on the reef is a buffet included in the fare and Cairns eats well enough if you know about Rusty's Market, but nobody plans this trip around food.
Indie fit
5
Near 5, since the easy path is a big pontoon day, but scheduled ferries to Fitzroy and Magnetic islands and 20-person boats like Reef Daytripper let you shape the day yourself.

Editorial scores, 1 to 10, against the same written anchors for every city. Half points allowed. The overall is the plain average of the six.

Overview and Things to Consider

The Great Barrier Reef is more than 2,900 separate reefs and 900 islands strung along 2,300 kilometers of the Queensland coast, and you will see a tiny piece of it. That's the first thing to get straight. Most visitors see one reef, from one boat, for about three hours. Which reef, which boat and which three hours decide whether you come home shrugging or rearranging your life around learning to dive. Most trips start in Cairns, the busiest gateway, with Port Douglas an hour north and Airlie Beach and the Whitsundays 500 kilometers south.

You'll love it if you're happy face-down in warm water for hours, if you want to finally get certified, or if you like the idea of sleeping on a coral cay with seabirds nesting outside the door. You'll hate it if you expect a postcard from the 1990s, dislike boats, get seasick or travel on a backpacker budget that can't absorb A$300 for a day. Non-swimmers get semi-submersibles and underwater observatories, which are fine for an hour and a long way to come for one.

The 2026 moment is cautious recovery. The early 2024 bleaching was the most widespread and severe on record, and the Australian Institute of Marine Science survey published in August 2025 found the biggest annual coral loss since monitoring began in 1986 in two of its three regions. The survey released in August 2026 found cover across all three regions steady or slightly up. So the reef is not dead, and it's not fine either. It's volatile, and the reef you snorkel depends on which reef the operator holds a permit for and what that reef has been through since 2016.

Some of the famous stuff is overrated. Heart Reef is a helicopter photograph, not a place you swim. Whitehaven Beach is one of the best beaches in Australia, and it's a beach. The big pontoons are built for families and first-timers and do that job well, but if you can swim, a smaller boat that visits two sites gives you more reef and fewer elbows for less money.

How Great Barrier Reef Got Here

Aboriginal Australians have lived along this coast for at least 40,000 years and Torres Strait Islanders for about 10,000, and around 70 clan groups count the reef as part of their sea country. Green Island off Cairns is Dabuukji to the Gungganyji people, who knew it as a place to be avoided, haunted by spirits. Europeans arrived late and badly. On 11 June 1770 James Cook ran the Endeavour onto a reef south of present-day Cooktown and spent seven weeks repairing her; a week earlier, on Whit Sunday, he had named the island passage that now sells the Whitsundays. Matthew Flinders, mapping the coast in 1802, gave the reef its name.

The nineteenth century treated the reef as a mine and a hazard. Islands were stripped for guano, lighthouses went up, Raine Island's first, and wrecks piled up, including the SS Yongala, which sank in a cyclone off Townsville on 23 March 1911 with all 122 aboard and is now a popular wreck dive. Science came in 1922 with the Great Barrier Reef Committee, and in the 1950s with the research station on Heron Island, where the University of Queensland became a partner in 1970.

The modern reef was a political fight. Royal Commissions blocked oil drilling, and the Great Barrier Reef Marine Park Act of 1975 created the park and its authority. World Heritage listing followed in 1981, and the zoning plan that took effect in July 2004 set no-take green zones across the park. Since 1998 the story has been heat, with mass bleaching in 1998, 2002, 2016, 2017, 2020, 2022 and 2024. Every reef trip you take now includes a A$8.50 government charge that helps pay for managing all this.

Getting There and Around

Cairns International (CNS), 7 kilometers north of the city, is the main gateway. Singapore Airlines flies from Singapore, Jetstar from Bali, Osaka and Tokyo Narita, Fiji Airways from Nadi and Air New Zealand seasonally from Auckland, with Jetstar's Christchurch flight ending on 24 October 2026. Qantas, Virgin and Jetstar connect Brisbane, Sydney and Melbourne, and QantasLink flies from Ayers Rock, handy if you're pairing the reef with the Red Centre. A metered Cairns Taxis cab charges A$3.80 flagfall plus A$2.88 a kilometer on weekday daytime rates from July 2026, so the city run is roughly A$25, plus a A$4 airport toll (A$5 from the international rank) and any wait. Shuttle buses also run to the city.

For the Whitsundays, fly into Whitsunday Coast Airport (PPP) near Proserpine, served by Jetstar and Virgin from the southern cities, or straight onto Hamilton Island (HTI), which has its own commercial airport. Further south, Lady Elliot Island has an airstrip with daily flights from Bundaberg, Hervey Bay, Brisbane and the Gold Coast, and Heron Island is a daily catamaran from Gladstone, 87 kilometers away. The overland option is Queensland Rail's Spirit of Queensland, which takes 25 hours over 1,681 kilometers from Brisbane, leaving Monday, Wednesday, Friday and Saturday at 3:45pm and stopping at Proserpine for the Whitsundays and at Townsville on the way.

Entry rules are strict and digital. US, Canadian, Japanese and many EU passport holders, plus British citizens, can get an Electronic Travel Authority through the Australian ETA app, which costs a A$20 service charge, lasts 12 months and allows stays of up to three months at a time. EU and UK citizens can apply instead for the free eVisitor, also valid for 12 months with three-month stays. Australians just need ID for a domestic flight. Apply before you book anything nonrefundable, and apply from outside Australia.

Once you're in Cairns, the reef comes to you. Almost every big boat leaves from the Reef Fleet Terminal on the city waterfront, which is walkable from the central hostels, and operators sell return coach pickups for A$36 to A$52 from city and northern beaches hotels. Translink buses in Cairns, Townsville and the Whitsundays charge a flat 50 cents, cash accepted. From Port Douglas, Quicksilver's boats leave the marina at 10am and reach Agincourt Reef by about 11:30. From Townsville, the ferry to Magnetic Island costs A$18.50 each way.

What's Changed Since 2016

The bleaching years are the big change. Back-to-back events hit in 2016 and 2017, and the first alone killed huge sections of an 800-kilometer stretch of the northern reef, and in October 2016 Outside magazine ran a premature obituary that still shapes what people think. By 2022 the institute recorded the greatest recovery in 36 years, mostly fast-growing acropora. Then early 2024 brought the worst bleaching on record, and the August 2025 report found coral cover down 25% in the north and 30% in the south, the largest annual falls ever recorded there, with the central reef off Cairns down 13%.

In August 2026 the institute's latest survey of 121 reefs, done between August 2025 and June 2026, found coral cover steady or slightly up in all three regions, which it called the start of recovery from 2024. When a newspaper took that as proof the warnings were wrong, the institute pushed back that high coral cover shows resilience, not that the bleaching never happened, and that the real worry is whether recovery windows stay long enough. For a visitor that means good reefs exist, and asking an operator which site they're visiting this week is a fair question.

Weather has reshaped the coast too. Cyclone Debbie damaged Hamilton Island in 2017. Cyclone Jasper made landfall near Wujal Wujal in December 2023 as the wettest tropical cyclone in Australian history, dropping more than 2.2 meters of rain near the Daintree River, halting operations at Cairns Airport and cutting the Captain Cook Highway between Cairns and Port Douglas. By the Guardian's count in May 2026, at least six island resorts sit abandoned after storms, including Brampton, closed since Cyclone Yasi in 2011.

Prices moved in April 2026. Quicksilver and Great Adventures added a fuel surcharge of A$10 per adult and A$5 per child on outer reef cruises from 1 April 2026, on top of the A$8.50 reef charge built into every fare, while Sunlover folded its fuel levy into the ticket price. Ownership moved too: in December 2025 Blackstone agreed to buy Hamilton Island from the Oatley family for a reported A$1.2 billion.

Some islands are coming back. In May 2026 Mackay council backed a A$583 million plan to rebuild the derelict Club Med on Lindeman Island as an eco resort, restoration has started on Dunk Island, and new owners on Hook Island have announced an eco resort for 2027. The Queensland government has also been forcing lazy leaseholders out, stripping the Double Island lease near Cairns in June 2024.

What the Usual Advice Gets Wrong

"The Great Barrier Reef is dead, so don't bother." The institute's 2026 surveys found coral cover steady or slightly up across all three regions after the 2024 losses, and outer reefs off Cairns and Port Douglas are still worth the trip. It's damaged and unstable, which is different from dead.

"Go to the Whitsundays to see the reef." The Whitsundays are mostly continental islands with beaches and fringing coral. The outer reef is a long ride out: Cruise Whitsundays' Reefworld pontoon at Hardy Reef sits 39 nautical miles offshore. If coral is the priority, Cairns and Port Douglas are much closer to the outer reef.

"Stinger season means no swimming from November to May." Reef trips run all year. Box jellyfish are mainly a hazard near beaches and river mouths rather than over coral, and operators hand out full-body lycra suits for free. Wear one, and swim inside the nets on mainland beaches.

"Cairns is a beach town, so stay in the city and swim." Central Cairns has no swimming beach, just a free lagoon pool, 1.5 meters at its deepest, on the Esplanade. The netted beaches are at Palm Cove, Trinity and the other northern beaches, 15 to 25 minutes' drive away.

"July is the best month, it's the dry season." July is dry but has the coolest water and the busiest boats, because Australian school holidays fill them. September is calmer, still dry, quieter and warmer, and is the better all-round month.

"You need the big pontoon trip to see the reef properly." Pontoons suit families and non-swimmers. Strong swimmers often do better on small boats such as Reef Daytripper, which caps numbers at 20, spends just under four hours at Upolu Reef across two sites and costs A$269 plus a A$15 levy, still less than the big operators.

Ideas to Consider for Your Visit

Have you thought about a small boat instead of a pontoon? Reef Daytripper takes a maximum of 20 people from Cairns to Upolu Reef on the outer edge, visits two sites and gives you just under four hours in the water for A$269 plus a A$15 levy, with a guided snorkel included. Passions of Paradise sails a 25-meter catamaran from about A$275 to two outer reef sites, and has held a permit to land passengers on Michaelmas Cay. The trade-off is no observatory and no semi-sub, which is the point.

If you're traveling with kids, a non-swimmer or someone nervous about open water, the pontoons earn their price. Great Adventures runs from Cairns at 10:30am to a platform on the outer reef, back at 5:30pm, with up to three hours there, a semi-submersible, an underwater observatory and a buffet lunch for A$312 plus the A$10 fuel surcharge. Sunlover goes to Moore Reef for A$317 all in, with a marine-biologist-led snorkel tour included.

Learn to dive here, on the reef rather than in a pool. Sunlover runs SSI Open Water certification with all training in the ocean at a pontoon at Moore Reef for A$1,030, and Pro Dive Cairns runs three-day, two-night liveaboards with a maximum of 32 passengers, which put you on the reef for sunset and early-morning dives that day boats can't touch. The minimum age for scuba in Queensland is 12.

From Port Douglas, an hour's drive north of Cairns, Quicksilver runs a fast boat to Agincourt Reef on the very edge of the continental shelf for A$338 plus fuel surcharge. Its sister boat Wavedancer sails for about an hour to Low Isles, a small coral cay set in a lagoon that sea turtles use, a gentler day than the run to the outer edge.

On weekends in Cairns, go to Rusty's Market between Grafton and Sheridan streets. It has run since 1975, now with around 180 stalls of tropical fruit, seafood and food stalls, open 5am to 4pm Friday and Saturday and until 3pm Sunday. Buy fruit for the boat and breakfast for the next morning.

Base yourself on Magnetic Island for a few days. It's 8 kilometers off Townsville, A$37 return on the ferry, with five small settlements, Horseshoe Bay and the World War II forts that once guarded Cleveland Bay. From Townsville, dive operators run to the SS Yongala wreck, 110 meters long and one of the most intact historic wrecks anywhere, which more than 10,000 divers visit a year.

Pair the reef with the rainforest. The Daintree is about an hour and a half north of Cairns, Mossman Gorge about 70 minutes, and the Kuranda Scenic Railway climbs from Cairns through Barron Gorge, stopping for the view, to the hill town of Kuranda. One reef day, one forest day, repeat.

The Part Most Guides Miss

The coral cays are the best thing here and most guides treat them as a lunch stop. Michaelmas Cay, which Passions of Paradise has a permit to land on, is one of the most important seabird nesting sanctuaries on the whole reef, with more than 20,000 birds over white sand and shallow water. Heron Island in the south has around 900 of the reef's 1,500 fish species on its doorstep, green turtles nesting on the beach and more than 200,000 birds in summer. Lady Elliot, the southernmost cay, sits inside a green zone with some of the clearest water on the reef. Sleeping on one of these, rather than commuting by boat for a three-hour window, changes the whole trip: you snorkel at dawn, walk the cay at night and see the reef as a place rather than an excursion.

Where to Base Yourself

Cairns. The default and, for most people, the right one. More reef boats leave from here than anywhere else, the airport has the most international flights, dorms run from about US$11 to US$36 a night, and buses cost 50 cents. The catch is that the city has no swimming beach, so you'll be swimming in the lagoon pool or busing to the northern beaches. Stay central near the Esplanade and the Reef Fleet Terminal so you can walk to the boat.

Port Douglas. A seaside resort town an hour's drive north of Cairns, and a gateway to both the reef and the Daintree. Quicksilver's boats reach Agincourt Reef on the edge of the shelf in about 90 minutes. It's quieter, but it has fewer boats than Cairns and the Captain Cook Highway in can close in big wet-season storms, as it did after Cyclone Jasper.

Airlie Beach and the Whitsundays. Base here for sailing, island hopping and Whitehaven Beach, with full reef days to the Reefworld pontoon at Hardy Reef from A$295. The flight is into Proserpine (PPP) or Hamilton Island (HTI). The catch is that the outer reef is far, so this is a sailing and beach base that does reef days, not a reef base.

A southern coral cay. Heron or Lady Elliot Island, reached by catamaran from Gladstone or a small plane from Bundaberg or Hervey Bay, is the splurge that makes sense. You trade nightlife and choice for reef straight off the beach and no daily boat commute. These islands are small, so book well ahead and expect to pay island prices for everything.

Realities to Be Aware Of

Budget around the boat. A dorm in Cairns runs from about US$11 to US$36 a night on Hostelworld, buses cost 50 cents, and Rusty's Market keeps food cheap. The reef day is what moves the number. Expect A$284 to A$348 per adult for an outer reef trip with levies and surcharges, A$109 to A$156 for an island day to Fitzroy or Green Island, and A$149 to A$205 more if you add a dive. Two reef days in a week can cost more than the beds. Family fares help, and Sunlover's family ticket lets the second child go free.

The hazards are physical, not criminal. Box jellyfish and other marine stingers are present roughly November to May and mostly turn up near beaches and estuaries; operators provide lycra suits for free, and you should wear one. Saltwater crocodiles live in rivers and estuaries north of Rockhampton and rarely cross reef areas. Unprotected skin can burn in about 20 minutes. Heat is a risk on island walks too: in October 2025 an 80-year-old cruise passenger died alone on Lizard Island after turning back early from a hike to Cook's Look on a day the nearest weather station hit 89°F (32°C), while her ship sailed without her.

Read the reef conditions, not the calendar. Wind drives swell, which drives seasickness and visibility, and Sunlover's own advice is to book your reef day a few days into a Cairns stay rather than the morning after you land, so you can move it if the forecast turns. Operators run in rain, which makes no difference underwater, and a rough crossing is a better reason to move your day than a gray sky.

Crowds follow Australian school holidays: mid-December to late January, two weeks around Easter, late June into July and late September into early October. Popular July days sell out, Christmas Day carries a surcharge on some boats, and February is the quietest month on the water. The weeks either side of a school break are the sweet spot if you want a calm boat.

What things cost in Great Barrier Reef

Prices checked October 2026. Each links to where we read it.

ItemPriceSource
Outer reef pontoon day, Cairns (Great Adventures)A$312 adult plus A$10 fuel surchargeGreat Adventures fares, 2026-27
Moore Reef day, Cairns (Sunlover)A$317 adult, fuel levy includedSunlover prices, 2026-27
Agincourt Reef day, Port Douglas (Quicksilver)A$338 adult plus A$10 fuel surchargeQuicksilver fares, 2026-27
Small-boat snorkel day, Upolu Reef (Reef Daytripper)A$269 adult plus A$15 levyReef Daytripper, Oct 2026
Fitzroy Island return ferryA$109 adultSunlover prices, 2026-27
Full reef day from Airlie Beach (Reefworld)From A$295 per personCruise Whitsundays, Oct 2026
Introductory scuba dive add-onA$149 (Sunlover) to A$205 (Quicksilver, Great Adventures)Sunlover prices, 2026-27
Dorm bed, central CairnsFrom about US$11 to US$36 a nightHostelworld Cairns, Oct 2026
Townsville to Magnetic Island ferryA$18.50 one way, A$37 returnMagnetic Island Ferries, Oct 2026

Great Adventures, Sunlover and Quicksilver publish fares for travel 1 April 2026 to 31 March 2027, and Great Adventures and Quicksilver include the A$8.50 Environmental Management Charge. Hostelworld lists beds in US dollars.

If Great Barrier Reef Is Part of a Longer Trip

The classic route runs the Queensland coast between Cairns and Brisbane, by rail, bus or a string of short flights, with stops in Townsville for Magnetic Island, Airlie Beach for the Whitsundays and the southern cays near Gladstone and Bundaberg. The Spirit of Queensland does the whole 1,681 kilometers in 25 hours, leaving Cairns on Monday, Wednesday, Friday and Sunday at 7:40am. Queensland Rail's RailBus coaches link the train to Airlie Beach. Start in the north in winter, when the wet season has cleared, and work south. See our Queensland guide for the rest of the state.

Cairns works well as an entry or exit point on a longer trip. Singapore Airlines, Jetstar to Bali, Osaka and Tokyo, Fiji Airways to Fiji and Air Niugini to Port Moresby make it possible to fly in from Asia or the Pacific, see the reef, and fly south without backtracking. QantasLink to Ayers Rock and Airnorth to Alice Springs and Darwin connect the reef to the outback in one flight. AirTreks can build Cairns into a multi-stop ticket so you arrive from Asia and leave from Sydney or Melbourne.

Yearly Things to Consider

Two forces set the calendar: the wet season from November to May, with heavy afternoon downpours and the occasional cyclone, and the stinger season over roughly the same months. That pushes most visitors into June to October, which is also the coolest water. August is the driest month and often has the clearest visibility; September is the most settled all round. Coral spawning usually falls in October or November on the nights after a full moon.

The counterintuitive move is to go in the shoulder months. April often has glassy water after the rains ease, May is drier and still warm, and the reef is quiet. February is the quietest and warmest on the water but also the wettest month, with 18.7 inches of rain on average at Cairns. Avoid the second half of December if you don't book far ahead.

Great Barrier Reef month by month

MonthTempRainfallSeasonNotes
January89°F (32°C)15.3 inLowWet season and stinger season. Busy until Australian school holidays end late in the month.
February89°F (32°C)18.7 inLowWettest and quietest month, with the warmest water of the year.
March88°F (31°C)14.5 inLowStill wet and quiet. Rain eases late in the month; Easter can fall here.
April85°F (30°C)7 inShoulderRain halves and calm days are common. Easter school holidays push demand.
May82°F (28°C)3.2 inShoulderDrier and less humid. Tail end of the main stinger period.
June80°F (27°C)1.7 inShoulderDry with stronger trade winds and choppier crossings. Busy from late June.
July79°F (26°C)1.4 inHighCoolest water and busiest boats in the school holidays. Book ahead.
August81°F (27°C)1 inHighDriest month, winds easing, visibility often at its best.
September84°F (29°C)1.1 inHighCalm, dry and warming. The best all-round month; holidays start late in the month.
October86°F (30°C)2.5 inHighWarm and calm. School holidays early in the month; coral spawning possible.
November88°F (31°C)3.4 inShoulderStinger season starts, suits provided. Quiet before Christmas, storms late.
December89°F (32°C)7.3 inShoulderQuiet early, very busy from about December 20. Wet season begins.

Ideas for Itineraries

3 Days in Great Barrier Reef

Three days means Cairns and one boat. Day one, walk the Esplanade, swim in the lagoon and check the wind forecast. Day two is the outer reef: a pontoon with Great Adventures or Sunlover if anyone in your group is unsure in the water, a small boat like Reef Daytripper or Passions of Paradise if everyone swims well. Day three, take the A$109 ferry to Fitzroy Island for rainforest walks and the turtle rehabilitation center, or ride the Kuranda Scenic Railway up the range. Keep the reef day in the middle so weather can push it.

5 Days in Great Barrier Reef

Five days lets you do two reef days and see the difference between them. Spend three nights in Cairns with one pontoon or small-boat day and one island day to Fitzroy or Green Island, then move to Port Douglas for two nights. From there take Quicksilver to Agincourt Reef on the edge of the shelf, or the Wavedancer sail to Low Isles if the sea is up, and spend your last day at Mossman Gorge and on the Daintree River. Fly out of Cairns, an hour's drive south.

1 Week in Great Barrier Reef

A week is enough to learn to dive or sleep at sea. Book a three-day, two-night liveaboard out of Cairns with Pro Dive Cairns, or the SSI Open Water course with Sunlover at Moore Reef, and give it days two to five. Use the first day to rest and the last two for the Daintree or Kuranda. If diving isn't your thing, split the week between Cairns and Port Douglas and add a night or two on a coral cay; the dawn snorkel is the thing a day trip never gives you.

2 Weeks or More in Great Barrier Reef

Two weeks lets you run the coast. Start with five days around Cairns and Port Douglas for the outer reef and rainforest, take the train or fly to Townsville and settle on Magnetic Island for three or four days of walking tracks and bays, then go on to Airlie Beach for a Whitehaven sail and a reef day out to Hardy Reef. Finish on Heron or Lady Elliot Island for two or three nights before flying out of Brisbane. Go in May or September for the best mix of weather and space.

Sources

What this guide is built on. Every page below was read for this guide; prices and rules were checked in October 2026.

Great Barrier Reef Travel FAQ

There is no gate. Every visitor aged 4 and over pays a government Environmental Management Charge of A$8.50 per person on a reef trip, and operators include it in the fare. You won't pay it separately if you book a normal tour.

Not the outer reef, which is well offshore and needs a boat. You can reach fringing reef on your own by taking the A$109 return ferry to Fitzroy Island from Cairns and snorkeling from the beach, and you can stay on a coral cay like Heron or Lady Elliot, where the reef starts at the waterline.

Port Douglas is closer to reefs on the edge of the continental shelf, such as Agincourt, and feels more relaxed. Cairns has far more operators, more budget beds and the airport. For a first trip on a budget, choose Cairns; for a quieter week with a car, Port Douglas.

No, though you'll get much more from it if you can. The pontoons have underwater observatories, semi-submersibles and helmet walks such as Seawalker or Oceanwalker, which need no swimming. Small boats like Reef Daytripper don't dock anywhere, so swimming ability is required.

Twelve, under Queensland law, even where a dive agency's own minimum is lower. Introductory dives with an instructor cost about A$149 to A$205 as an add-on to a reef day. Divers need to fill in a medical questionnaire before they go in.

The southern end. Lady Elliot Island, the southernmost coral cay, has direct flights from Brisbane and the Gold Coast as well as Bundaberg and Hervey Bay, and Heron Island, 460 kilometers north-northwest of Brisbane, is a daily catamaran from Gladstone. Both are overnight trips rather than quick hops, and Lady Elliot in particular is known for its clear water.