Swimming with dolphins in Hawaiʻi: why is it banned in the wild but allowed at hotels?

The short answer: these are two different worlds, with two different sets of rules. One protects wild animals in their home. The other is about keeping and caring for animals held for public display. And being legal, on its own, does not tell us whether something is good for the animal.

Let us look at each world, one at a time.

What is forbidden in the wild

Since 28 October 2021, a federal rule has prohibited swimming with, approaching or remaining within 50 yards, about 46 metres, of Hawaiian spinner dolphins. It covers waters within two nautical miles of the main Hawaiian Islands, and designated waters between Lānaʻi, Maui and Kahoʻolawe.

There is a clever detail too. Placing swimmers or boats ahead of the dolphins, so that the dolphins come to them, is also covered. You cannot wait in their path and then say they came to you.

Please do not simplify this into “swimming with any wild dolphin is illegal everywhere”. This rule is about Hawaiian spinner dolphins, in these defined waters. Other marine mammals are still protected against unlawful harassment under the Marine Mammal Protection Act, a United States law. And NOAA Fisheries advises watching dolphins from a boat or from shore.

Why the spinner dolphins need their rest

It all comes from their daily routine. Hawaiian spinner dolphins feed offshore at night. Then, during the day, they come into coastal bays to rest, socialise and care for their young.

So those calm, beautiful bays are not just a handy place for us to meet them. They are their bedroom.

Researchers studying spinner dolphins on Hawaiʻi Island, in work published in 2018, recorded how often people came close during the day. The median gap, the typical time between one exposure and the next, was only ten minutes. They warned that such short breaks could keep the dolphins from going back to undisturbed rest.

They were also honest about the limits. In their analysis they did not find an effect on resting behaviour, and they said their comparison observations might already reflect long-term disturbance. So the study supports concern. It does not prove that every single encounter causes measurable harm.

For a visitor, an encounter may last a few minutes. The real question is what happens across the dolphin’s whole day.

So why can a hotel offer a dolphin encounter?

Here is the part that surprises many people. Being a hotel does not create any exemption. What matters is that the dolphins are held in a public-display facility, and that is a different system.

NOAA explains that these facilities must have an education or conservation programme, be open to the public on a regular basis, and be licensed or registered by the US Department of Agriculture. After changes to the Marine Mammal Protection Act in 1994, the Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) oversees the care of captive marine mammals, including programmes where the public interacts with them. NOAA keeps some roles, like permits for capture from the wild and for imports, and inventory records. Since those changes, a facility has not needed a permit under that law simply to hold marine mammals for public display.

There is also a small detail that is easy to miss. The federal code still shows a section called “Swim-with-the-dolphin programs”. But a note on it says this section, 9 CFR §3.111, has been suspended since 2 April 1999. So its detailed requirements should not be quoted as if they were enforced today. Other Animal Welfare Act requirements still apply.

Hotel-linked dolphin encounters are advertised in Hawaiʻi, which shows the two systems side by side. But a sales page, on its own, does not prove animal welfare or compliance.

Legal is not the same as good for the animal

A licence answers a legal question. It does not answer every question you might have about the animal’s life.

If I were considering it, I would want to know a few things. Can a dolphin leave the interaction area? Does saying no to a session change its feeding? How are its social groups managed? How much quiet rest does it get? Are independent welfare findings available? These are questions to ask, not accusations against any particular hotel.

The science needs care as well. A 2023 study at a facility in Israel recorded dolphins interacting with trainers without food rewards, so food is not the only possible reason for contact. But that study does not tell us about the welfare of dolphins at a Hawaiian hotel, and it does not assess every tourist swim programme.

So we should not claim that every captive dolphin lives the same life. And we should be just as careful with the word “educational” as a full answer to welfare worries.

How can you see dolphins in Hawaiʻi without harming them?

My own preference is simple: watch dolphins in the ocean, respecting their space and the rules that protect them. In Hawaiʻi, that means watching from shore or from a responsibly run boat. No chasing, no feeding, no touching, and no getting into the water to follow spinner dolphins.

NOAA’s Hawaiʻi viewing guidance separates the law from recommended distances. For Hawaiian spinner dolphins, 50 yards is the law. For other dolphins and small whales, at least 50 yards, about 46 metres, is recommended. For humpback whales, federal law forbids approaching within 100 yards in Hawaiʻi. For Hawaiian monk seals the recommendation is at least 50 feet, about 15 metres, or 150 feet, about 45 metres, for a mother with a pup, and at least 10 feet, about 3 metres, for sea turtles. And harassment can still be unlawful even beyond these distances.

Hawaiʻi also has much more dolphin life than one species in one bay. Cascadia Research Collective describes 18 species of toothed whales and dolphins documented in Hawaiian waters, 11 of them with populations that live around the islands. Living there does not mean easy to see. A good boat team keeps its distance, never puts the boat in the dolphins’ path, and never puts anyone in the water near them.

For a boat day like this, I keep my phone and sunglasses in a small dry bag, and I spend more time just watching than filming.

We can question captive encounters and still support protection for wild dolphins. Removing one protection would not fix the worries about the other system. It is the same idea behind our ocean retreats: the animal’s needs come before the experience we hoped to have.

Wildlife encounters are unpredictable. Dolphin watching should always follow local regulations and experienced professional guidance.

Questions people ask

Wildlife encounters are never guaranteed and never forced. Ocean Calling works only with vetted, ethical local operators, and every animal is free to approach, or not, entirely on its own terms.