Moorea vs Tonga vs Réunion: Where to Swim With Whales

Three destinations, three different ways to meet a whale

Can you swim with humpback whales in Moʻorea, Tonga and Réunion? In all three, yes, but only under rules that differ a lot, and in Réunion the in-water part is the most tightly limited. People often compare them as if they were three versions of the same trip. They are not. Each sits on the humpbacks' migration route in a different part of the world, and each has built its own relationship with the animals, some more hands-on, some more hands-off. Side by side, the differences are the whole story.

A note before the table: sightings are never guaranteed anywhere. Whales are wild, they move, and a busy week can turn into a quiet one. What we can compare honestly is the water, the pace, the rules, and how each place wants you to meet its whales.

Moʻorea: the gentle entry

Moʻorea is one of the easier places to be in the water with humpback whales. Encounters happen in the calmer waters around the island, often with mothers and calves moving slowly, and the pace tends to feel unhurried rather than dramatic. Places to stay, transport and licensed excursion operators are well established here, which matters when you are still building confidence in open water.

The rules were updated recently. The official 2025 guide of DIREN, the French Polynesian environment directorate, which summarises the territory’s environment code (articles A. 2213-1-4 to A. 2213-1-11), sets three circles around a whale. Nobody may enter within 15 metres. No boat may enter within 100 metres. Within 300 metres, only authorised boats may be present, no more than three at a time, at under 3 knots, and boats without authorisation stay outside. Observation is allowed from 20 July to 20 November, from 07:30 to 17:30, never in lagoons, bays or passes, and in-water entries are for seven people per boat, including the guide. Conservation groups such as Mata Tohora have also said there are too many boats on the water at busy times, which is a good reason to choose an operator who is happy to wait. Rules can change, so check the current rule before you travel, or read our closer look at how French Polynesia regulates whale tourism.

Moʻorea is also where we host our small-group whale retreat, in September 2027, because the conditions support a calm, unhurried first experience. Even there, a whale may come close, or it may not appear at all.

Tonga: the deep connection

Tonga has offered regulated in-water whale encounters for many years, and it is often described as the more immersive of the classic swim destinations: open water, more swell, and a quieter, less commercial feel than some others. Its Whale Watching and Swimming Regulations were published in the Government Gazette in May 2013. I could not open the gazette text itself, so I do not quote its numbers here. Summaries such as the International Whaling Commission’s Whale Watching Handbook describe a small group of swimmers with a licensed local guide, minimum distances for swimmers and boats, a time limit for each encounter, especially with mothers and calves, no scuba diving with whales, and fines for breaking the rules. Ask your operator to walk you through the current limits.

The IWC notes that the regulations have been under review, so check the current rule with Tonga’s authorities or your licensed operator before you travel. Our own summary is in Tonga's humpback whale swimming rules.

Getting there usually means longer travel days, and local rhythms, including Sunday closures, are worth building into your plans instead of working against them.

Réunion: watched mostly from shore

Réunion is the one that changes the comparison. Its volcanic landscape and Indian Ocean setting make it a striking place for whale season, but the in-water side is the most tightly managed of the three. After several incidents in the 2024 season, the prefecture updated its rules with order no. 1098 of 27 June 2025. The humpback rules apply from 1 July to 30 September. Within 300 metres of an animal, no more than three boats are allowed, down from five, and boats must slow to 4 knots. The number of swimmers in the water is reduced to seven, each water entry is limited in time, and press reports say entries are now only allowed between 9:00 and 13:00. Outside the season, boats must stay more than 300 metres from humpbacks.

French reporting has described whale swimming in Réunion at its peak as a form of tourism out of control, which is part of why the rules changed. So if you come during whale season, expect a calmer, more limited kind of encounter: watching from a boat or from the coast, often paired with hiking, volcanic landscapes, and Creole and French culture. We explain the time window in Réunion's 9am to 1pm water-entry rule. As always, check the current rule before you travel.

Which whale destination fits your comfort level?

Your own comfort in open water matters more than a destination's reputation. If you are newer to snorkelling or open ocean swimming, calmer conditions and a gradual entry tend to make the experience feel manageable instead of overwhelming. If you already swim, freedive or dive with confidence, the more exposed conditions in Tonga or the changing currents in Réunion are less likely to distract you from what is happening in front of you.

A short freediving or ocean-safety course before you travel, with easy finning, relaxed breathing and basic positioning in the water, goes a long way toward letting you watch the whale instead of managing yourself. Comfortable, well-fitting fins make a real difference in open water, and long freediving fins are worth trying in a pool before the trip. A long-sleeved rash guard helps in the sun during long boat days, and a roll-top dry bag keeps a phone and a warm layer dry between swims.

Choosing your blue

The whales are the constant. What changes between Moʻorea, Tonga and Réunion is the setting you meet them in, the rules for the encounter, and, in Réunion's case, whether you are in the water at all. None of these approaches is more "real" than the others. The best trip is simply the one where the setting matches your comfort, your intentions, and your respect for an animal that never asked to be watched in the first place.

The ethical layer: rules are the minimum

All three places have written rules, and that is good. But a rule is a minimum, not a goal. A mother and calf resting near the surface did not choose to be part of anyone's holiday. The most respectful operators often do less than the law allows: fewer swimmers, shorter time, more waiting, and leaving when the whale shows any sign of disturbance. Wildlife encounters are unpredictable. Swimming with humpback whales should always follow local regulations and experienced professional guidance.

If you want vetted guidance on any of these destinations before you book, our local experts page explains who leads the water sessions on our trips.

Questions people ask

If this made you curious about meeting the ocean this way, you can explore our upcoming retreats.

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.