As the world marks Earth Day, the Pacific island nation of Tuvalu is facing an existential crisis, with rising sea levels threatening to submerge most of its land by the end of the century. Communities across the low-lying nation are already grappling with the effects of climate change, while also exploring ways to preserve their future, identity and sovereignty.
In recent years, many Tuvaluans have begun preparing for the possibility of displacement. In 2025, more than 90 percent of the population applied for a visa scheme offering residency or citizenship in Australia. Earlier, in 2022, the government launched the world’s first “digital nation” in the metaverse to safeguard its culture and statehood in case its physical territory disappears beneath the ocean.
According to the United Nations Development Programme, small island communities like Tuvalu have limited resources to combat rising seas. Officials warn that despite their small populations, these nations are on the frontline of the climate crisis and require urgent global support to protect livelihoods and maintain stability.
Sea levels in Tuvalu have risen by 21 centimeters over the past 30 years—nearly double the global average—due to global warming and regional ocean dynamics. With most of the country sitting less than two metres above sea level, even high tides are now causing severe flooding. Traditional coastal protection methods, such as seawalls and mangrove planting, are increasingly ineffective as stronger tides wash over them.
While adaptation efforts continue, migration is emerging as a parallel solution. Under the Falepili Union treaty signed in 2023, a limited number of Tuvaluans can relocate to Australia each year. Similar migration pathways exist for citizens of other Pacific nations, including Kiribati and Vanuatu, raising concerns about the long-term impact on cultural heritage and traditional ways of life.
Despite the threat of losing physical land, a 2025 ruling by the International Court of Justice clarified that statehood and sovereignty can be maintained even if a nation’s territory is submerged, ensuring Tuvalu would retain its legal rights and international recognition.
On the ground, innovative adaptation measures are underway. Through a partnership between the Tuvaluan government, UNDP and the Green Climate Fund, the Tuvalu Coastal Adaptation Project is creating elevated land designed to withstand future sea-level rise. This large-scale initiative includes dredging sand to build new, higher ground and protect key islands such as Funafuti, Nanumea and Nanumaga from storm surges. Additional efforts include expanding land areas and introducing insurance schemes to support households affected by flooding.
These measures, while costly and complex, may serve as a model for other highly vulnerable nations such as Kiribati and the Marshall Islands. UN Secretary-General António Guterres has previously emphasized the global stakes, noting that protecting the Pacific is critical to safeguarding the planet.
For Tuvalu, the fight against rising seas is not just about climate adaptation—it is about survival, identity and the question of whether a nation can endure without land.
