SUSTAINABLE TRAVEL TIPS FOR VISITORS TO HAWAII

How to Visit Hawaii and Protect the Ocean

There’s a moment that happens on almost every tour we run out of Haleʻiwa Harbor. The water changes color from the shallow turquoise of the coastline to a deep, ink-blue that seems to go on forever. The engine cuts, the boat drifts, and then, silently, the first shark appears.

For most of our guests, it’s a turning point. Something shifts. A person who boarded the boat with a sense of fear or a flicker of guilty thrill steps off it two hours later, asking how they can help protect these animals. That kind of change, from fearful visitor to informed advocate, is at the heart of what we do at Hawaii Shark Encounters.

But the truth is, sustainable travel in Hawaiʻi starts long before you reach us. It starts with the choices you make before you even pack your bag. Hawaiʻi is one of the most ecologically fragile places on Earth. With nearly ten million visitors arriving each year, the cumulative weight of those choices, ranging from sunscreen to food, transportation, tours, and trash, is enormous. The good news is that traveling responsibly here has never been more accessible. You just need to know where to start.

Whether this is your first trip to Oʻahu or your tenth, this guide is our way of sharing what we’ve learned from the water, from the land, and from the Hawaiian culture that has been caring for these islands for over a thousand years.

Three Words That Guide Everything 

Before tips and checklists, start with language. Three Hawaiian concepts will anchor everything else:

Mālama ʻāina: It means “to care for the land.” Not as a duty imposed from the outside, but as a natural response to a reciprocal relationship. The land feeds you, so you care for the land in return. This principle is more than a thousand years old and is embedded in the ahupuaʻa system. This traditional Hawaiian land-management model divided each island into wedge-shaped districts running from the mountain to the sea. It ensures that every community shares responsibility for the watershed from summit to shore.

Aloha ʻāina: “Love of the land.” Deeper than affection, this is a spiritual stance; a patriotic, ancestral bond with the soil, the reefs, and the water. When you hear locals talk about protecting the islands, they are speaking from aloha ʻāina.

Pono: “Rightness. Balance.” To “travel pono,” the rallying call of the Sustainable Tourism Association of Hawaiʻi, is to move through the islands doing what is right. Right by the reef, right by the culture, right by the people who call this home.

These are not hotel-brochure phrases. They are the living foundation of every modern Hawaiʻi conservation law and every thoughtful choice you’ll make during your visit. When you understand where they come from, the rest follows naturally.

The Legal Toolkit: What Hawaii Has Already Done For You

One of the most remarkable things about sustainable travel in Hawaiʻi is how much the state has already done to make it easier. Some of the most important laws in the country were written right here.

Reef-safe sunscreen is not optional: Since January 1, 2021, Act 104 has banned the sale of sunscreens containing oxybenzone and octinoxate across the entire state. Maui County and Hawaiʻi County went further in 2022, allowing only mineral sunscreens (using zinc oxide or titanium dioxide) to be sold. The reason is stark: these chemicals damage coral DNA in concentrations measured in parts per trillion, and Hawaiʻi’s reefs are already fragile. Bring mineral sunscreen, or buy it when you land. Better still, wear a rash guard. The truth is, no sunscreen is truly reef-safe in large volumes.

Hawaiʻi’s Green Fee is now in effect: As of January 1, 2026, Hawaiʻi became the first state in the country to charge a visitor climate fee, raising the Transient Accommodations Tax by 0.75 percentage points and taxing cruise-ship cabins for the first time. This provision generates an estimated $100 million a year for environmental stewardship and beach restoration. On a $400 hotel night, that is roughly $3 extra, a small number for a meaningful commitment.

Sharks are protected by law: Since January 1, 2022, Act 51 has made Hawaiʻi the first US state to ban shark fishing. Knowingly capturing, entangling, or killing any shark species in state waters is now a misdemeanor with fines up to $10,000 per shark and the potential seizure of vessels and gear. These protections build on the 2010 shark-fin sales ban, also a first in the country, and align with the 2022 federal Shark Fin Sales Elimination Act.

Together, these laws represent a government-backed commitment to conservation that visitors can reinforce simply by choosing to honor them, and by choosing tour operators who do as well.

Eco-Friendly Travel in Hawaii: Tips for Every Part of Your Trip

In the Ocean 

The reef is the heartbeat of the Hawaiian ecosystem. Everything that happens on the water, what you put on your skin, how you enter the water, and which operators you book has a direct effect on its health.

• Use only mineral-based sunscreen with zinc oxide or titanium dioxide. Apply it before you leave your accommodation so excess doesn’t wash directly off your body into the shallows. Wear UPF clothing and rash guards where possible.
• Never touch coral. Not even a fingertip. Coral polyps are living animals that have taken decades and sometimes centuries to build what you see beneath you. A single touch can kill them.
• Give all marine wildlife space. Federal law requires staying 100 yards from humpback whales and 50 yards from Hawaiian monk seals and dolphins. Do not touch or chase sea turtles (honu). If an animal changes its behavior because of your presence, you’re too close.
• Choose ocean tours wisely. Look for operators who practice what true eco-friendly travel in Hawaiʻi demands: no chumming, no feeding wildlife, no anchoring on coral, and education woven throughout the experience. 

On Land and Trails 

Hawaiʻi has more endemic plant species per acre than almost anywhere on Earth. 83 percent of its native plants are found nowhere else. A single step off a marked trail can crush a species with fewer than 50 individuals remaining.

• Stay on marked paths. Respect kapu signs and fenced wahi pana (sacred sites). These places carry ancestral meaning for Native Hawaiian communities, and “no trespassing” is not a suggestion.
• Never take rocks, shells, sand, or coral home. Beyond its cultural significance, it’s ecologically harmful and, in many cases, illegal.
• Pack out everything you bring in, and if you can, carry a small bag and pick up what others have left behind. Microplastics are already embedded in these beaches at alarming concentrations. Every piece of plastic removed is a small but real act of mālama ʻāina.

Getting Around 

Tourist rental cars are the second-largest group of vehicles on Oʻahu’s roads. The carbon footprint is significant. Here’s how to reduce it:

• Take the bus. It’s one of the island’s most affordable and lowest-emission ways to travel. There’s a route from Waikīkī to the North Shore. The Skyline rail is now operational on its first segments in Honolulu.
• If you need a rental car, choose an EV or hybrid. Hawaiʻi has more than 530 public charging stations and the highest residential solar penetration of any US state.
• Consolidate your North Shore day trips rather than driving up and back separately. Share a shuttle to Haleʻiwa when possible. The drive is where carbon emissions accumulate fastest.

Where You Sleep and What You Eat

Book a Mālama Hawaiʻi package if you can. Dozens of participating hotels offer a free night or 20 percent off your stay in exchange for a vetted volunteer activity, such as a beach cleanup, a native tree planting, or a taro-patch restoration session. Doing so turns your accommodation choice into a direct conservation act. Also, avoid illegal short-term rentals. Hawaiʻi’s housing crisis is real.

As for food, between 85 and 90 percent of what’s eaten in Hawaiʻi is imported. Every meal at a local farm-to-table café or a Kahuku food truck keeps money in the islands and reduces the carbon cost of feeding you. On the North Shore, eat at places sourcing from Kahuku Farms or Mohala Farms, stop at roadside stands for fresh fruit, and buy Waialua Estate chocolate and Kona coffee directly from the producer. 

Skip souvenirs like coral jewelry, real shells, “shark-tooth” trinkets of uncertain origin that exploit the reef, and buy instead from Native Hawaiian artisans or the farmers’ markets in Haleʻiwa and Waimea. Trust us, making that switch is no sacrifice. They are some of the best purchases you will make on the island.

Mālama Hawaii: Give Back With Voluntourism 

The Mālama Hawaiʻi program connects visitors with more than 350 vetted volunteer opportunities across the islands and rewards participants with hotel perks. On Oʻahu’s North Shore specifically, the options are excellent:

• Mālama Loko Ea Foundation (Haleʻiwa): Restore an ancient Hawaiian fishpond just minutes from our harbor. Working alongside local stewards to rebuild rock walls and clear invasive species from a system that fed Hawaiian communities for centuries is mālama ʻāina in action.
• Surfrider Foundation Oʻahu & 808 Cleanups: Regular and drop-in beach cleanups along the North Shore, no commitment needed.
• Hawaiian Legacy Reforestation Initiative at Gunstock Ranch: Plant a GPS-tagged native tree that is trackable for the rest of its life. One tree per visitor, per trip.

If you have sixty minutes to spare during a seven-day trip, and most visitors do, you can meaningfully contribute to the islands that are giving so much to you.

The Part Most Guides Leave Out: Why Manō Is Central to All of This 

Every guide to sustainable travel in Hawaiʻi will tell you to use reef-safe sunscreen and support local restaurants. Very few will tell you about the sharks. Here is the part that matters most to us.

Globally, oceanic shark and ray populations have fallen 71 percent since 1970, according to a landmark 2021 study in Nature. Between 23 and 70 million sharks are killed each year for their fins, and 59 percent of the coral reef–associated shark and ray species that Hawaiʻi depends on are now threatened with extinction.

Sharks are not a side story in ocean conservation. They are the story. As apex predators, reef sharks control prey populations, remove sick and injured fish, and, critically, transfer nutrients from the open ocean onto the reef. A 2024 study found that as bleaching events intensify, sharks begin abandoning stressed reefs, removing the very nutrient flows those reefs need most to recover. Protecting sharks is not separate from protecting the reef. It is the same thing.

In Hawaiian culture, this has always been understood. Manō is one of the most sacred forms of ʻaumakua, family ancestor gods who take animal form to guide and protect their descendants. Hawaiian families with shark ʻaumakua would not harm sharks, and some left offerings at the shoreline. The shark god Kamohoaliʻi, brother of the volcano goddess Pele, is said to have guided the first Polynesian voyagers safely across the Pacific to these very shores. Protecting manō is not just ecological wisdom; it is cultural reverence.

What Sustainable Ocean Tourism on the North Shore Actually Looks Like 

Not all ocean tours are equal. When you are evaluating any snorkel, dive, whale watch, or shark encounter on Oʻahu, ask these questions:

• Do they chum or feed wildlife?
  If yes, move on. Chumming alters natural shark behavior, conditions animals to associate boats with food, and can be dangerous to both sharks and people in the water.

• Do they anchor on coral?
  Anchor drag on a reef can destroy hundreds of coral colonies in minutes. A 2024 incident at Kewalo Basin illustrated exactly this. Responsible operators use moored buoys, anchor in sand at depth, or drift without anchoring.

• Is education part of the experience?
  A guide who explains the ʻaumakua tradition, the 71% global decline in shark populations, the Act 51 protections, and the ecology of apex predators is doing real conservation work in real time. That conversation changes people.

• Do they hold STAH certification?
  The Sustainable Tourism Association of Hawaiʻi is the only third-party sustainable tourism certification in the United States. Certified operators commit to annual community service and natural resource projects, and are audited against strict environmental and cultural standards.

Our shark cage diving tour was built around these principles from the start. We motor three miles offshore to the same site we’ve used for years: 600 feet of open water above a sandy floor, far from any reef. The engine cuts. We drift. No anchor, no chum. The sharks arrive because this location is their home, and they’ve learned to associate the engine sound with the same vessels the crab boats use. Their behavior is not modified. Their habitat is not disturbed. Guests observe from inside a surface cage with Plexiglass windows, watching animals behave exactly as they would if no one were there.

While the cage is in the water, we talk about the global 71 percent decline, about manō as ʻaumakua, about Hawaiʻi’s fin and fishing bans, about what a healthy ocean looks like, and about what we risk if we do not protect it. Most guests board carrying thirty years of Jaws mythology. Most leave as something closer to advocates. That shift, from fear to understanding, is what we consider to be our most vital contribution to Hawai’i and its oceans.

You can read more about how we approach this work on our shark conservation page.

A Sustainable Day on the North Shore: Putting It All Together

If you are spending a day on Oʻahu’s North Shore and want every hour to count, here is what that can look like:

• Start early: Arrive at Haleʻiwa harbor before 8 AM with mineral sunscreen already applied, a rash guard packed, and a reusable water bottle filled. The shark cage dive runs two hours, covers marine biology, Hawaiian cultural history, and shark conservation, and returns you to the harbor with a fundamentally different relationship to the ocean.
• Eat locally: Haleʻiwa has some of the best farm-sourced food on the island. Spend your post-dive brunch at a café using Kahuku corn and North Shore eggs, not a chain restaurant importing ingredients from the mainland.
• Give back: After lunch, give an hour to Mālama Loko Ea fishpond restoration or a Surfrider beach cleanup at Puaʻena Point. One hour. That is all. The islands will remember it even if you do not.
• Walk Waimea Valley: The entrance fee funds the nonprofit stewards of native plants and cultural sites that have been here for centuries. Bring your reusable bottle. Pack out your trash.
• Depart feeling revitalized: Head home before the North Shore wind builds in the afternoon and leave the beach cleaner than you found it.

That single day touches every pillar of sustainable travel in Hawaiʻi: ocean protection, shark conservation, cultural respect, local economy, voluntourism, and low-waste choices. It is also genuinely one of the best days you will ever have.

Plan Your Trip the Pono Way

The ocean that surrounds these islands is not a backdrop. It is a living system that has sustained Hawaiian communities for a thousand years, and that absorbs the consequences of every choice made on and around it. 

But Hawaiʻi is also a place where the response to those pressures has been extraordinary. It has resulted in new laws being written, traditions being honored, communities being organized, and visitors being welcomed into a framework for doing things right.

Travel pono. Use the mineral sunscreen. Eat the local food. Give an hour to the land that gives you everything. And when you come out to the blue water off the North Shore and look through the Plexiglass at a Galapagos shark gliding past, just inches away, know that your choice to visit sustainably is part of the reason that the animal is still there.

Mahalo. A hui hou.