The Palau Pledge: what a promise stamped in a passport can do

Since December 2017, almost everyone arriving in Palau has been handed a promise to sign. Instead of an ordinary entry stamp, visitors receive a pledge in their passports, addressed to the children of Palau, vowing to "tread lightly, act kindly and explore mindfully" ¹. It is one of the most decorated tourism campaigns ever made. The harder question, nearly nine years on, is what a signature at the border actually changes, and what the record can show.

A promise at the border

The pledge began on the evening of 7 December 2017, with a routine flight from Guam. Arriving passengers watch a mandatory in-flight video, receive a checklist of dos and don'ts, and sign the stamped pledge to enter ¹. It came out of the Palau Legacy Project, created by the then First Lady, Debbie Remengesau, and co-chaired with Jennifer Koskelin-Gibbons, with fellow founders Nicolle Fagan, Laura Clarke and Nanae Singeo, a former managing director of the Palau Visitors Authority ². The Sydney agency Host/Havas proposed the passport format and produced the four-minute film that accompanies it ³.

The problem it addressed was real. National Geographic reported at launch that visitor numbers had averaged almost seven times Palau's population in recent years ¹; arrivals peaked at 168,770 in 2015 ⁷. The pledge drew explicitly on bul, the customary moratorium by which chiefs closed fishing grounds to let them recover ¹.

From pledge to law

The pledge is often described as a law in itself. It is more accurate to say that it sits inside a set of laws. The Responsible Tourism Education Act of 2018, signed in October that year, provided for a passport stamp acknowledging Palau's environmental and cultural policies, required carriers to help inform passengers, including by video, and banned the sale or import of sunscreens containing listed chemicals such as oxybenzone from 1 January 2020, with fines of up to $1,000 per violation ⁵. A legal analysis in the University of Colorado Law Review identifies this act (RPPL 10-30) as the pledge's statutory basis and notes that the toughest penalties attached to Palau's ocean, up to $1 million for illegal fishing, come from separate sanctuary legislation ⁴.

The same analysis is candid about the limits. Signing is mandatory, which may weaken its psychological force as a commitment; tourists receive no direct incentive to comply; and breaches are hard to detect ⁴. In short, the signature itself is not the enforcement mechanism. Its job is to tell visitors, at the moment of entry, that rules exist.

What has been measured

Most of the figures on the pledge describe the campaign rather than the reef. A 2020 peer-reviewed case study lists three Cannes Lions Grand Prix, including the Titanium, an estimated 1.7 billion media impressions and $6.2 million in earned media, and an agency survey in which 96% of tourists said the pledge made them consider their actions more closely and 65% said they had reminded others to protect the environment ³. Those survey results come from Havas, not an independent researcher, and the study's own evidence is descriptive ³. Counts of signatories vary: about 301,000 after three years, according to the 2020 study ³, and nearly one million by April 2024, according to a Nature Conservancy case study that does not explain its counting ⁷.

The Colorado analysis reported that Palauan officials were working with Cornell University researchers on measurement tools, and that it was too early to tell what environmental effect the pledge had had ⁴. We found no published independent evaluation linking the pledge to visitor behaviour on site or to reef condition. Meanwhile the IUCN's 2025 World Heritage Outlook for the Rock Islands Southern Lagoon rates recreational activities, including dive tourism and rising visitor numbers, a high threat, and describes the site's marine lakes as deteriorating ¹⁶. A 2022 follow-up, Ol'au Palau, announced an app rewarding responsible behaviour with access to places and experiences; we found no reported results ¹⁷.

The sanctuary behind the pledge

The pledge's credibility rests on what Palau has done at sea. The Palau National Marine Sanctuary, legislated in 2015, closed 80% of the country's waters to fishing and mining from 1 January 2020, leaving 20% as a domestic fishing zone ⁹¹⁰. It is financed partly by the Pristine Paradise Environmental Fee, a $100 charge on departing passengers aged 13 and over, with Palauan citizens exempt ⁶. Of each $100, the law allocates $10 to the Fisheries Protection Trust Fund that supports the sanctuary, $12.50 to the states, $25 to the airport, $30 to the existing Green Fee and $22.50 to the national treasury ⁶. The fee raised about $15.45 million between January 2018 and September 2019 ⁸.

That dependence on arrivals proved fragile. Covid-19 collapsed tourism and fee revenue ¹⁰; arrivals fell to 9,247 in 2022 ⁷. Successive proposals followed to reopen sanctuary waters. In 2019 the law was amended to allow exports from the domestic zone and to move it ¹⁰. In July 2022 Congress approved a marine spatial planning exercise tied to conservation grants but left the sanctuary act unchanged ¹¹. In January 2024 President Surangel Whipps Jr. called the 80% figure arbitrary and proposed a no-take minimum of 30%, citing about $3 million a year in lost fisheries revenue; conservation groups, traditional leaders and former president Tommy Remengesau opposed it ¹². In October 2025, amid lobbying by Japanese and Okinawan fishing interests, Island Times reported that the president had introduced legislation to open half of Palau's waters to regulated commercial fishing ¹³. High Chief Reklai responded that the sanctuary is both law and bul, and that no independent study had been published; the president cited a study finding 50% optimal ¹⁴. The latest reporting we found, from November 2025, still describes a reduction of the 80% no-take zone as a proposal rather than an enacted change ¹⁴.

Reading the record

What the pledge demonstrably changed is the threshold experience: every visitor is told, in writing and on film, that Palau expects something of them, and that message is backed by real rules on sunscreen, fees and fishing. What it has not demonstrated, on the evidence available, is an independently measured change in behaviour or ecological condition. The pledge also places responsibility on individual tourists, while the largest decisions about Palau's ocean are fiscal and geopolitical, and are being made about fleets, not snorkellers.

Arrivals are rising again, to 71,681 in 2025 from 56,184 in 2024 ¹⁵, which will restore fee revenue. Whether that strengthens the case for keeping the sanctuary intact is now the test of whether the pledge's promise is kept by the state as well as by its guests. Notably, Palauan voices on the pledge itself are largely absent from the sources we could find; community voices appear mainly in the sanctuary debate.