La Grande Caraïbe décryptée depuis 2015
The Greater Caribbean: Rising Sea Levels, a Ticking Time Bomb
Sea levels are rising worldwide, at around 3 to 4 mm per year. In the Greater Caribbean, the impact is amplified. Why? Low-lying islands, heavily urbanised coastlines, infrastructure built right at the water’s edge, and massive dependence on coastal tourism. The combination is explosive.
Territories on the Front Line
Some areas are extremely vulnerable:
- the Bahamas, the Cayman Islands, the Turks and Caicos Islands, Bonaire, and Aruba, with their very low elevations
- the coastlines of Guadeloupe, Martinique, Jamaica, and the Dominican Republic, already weakened by erosion
- major coastal cities such as Kingston, Havana, Cartagena, Colón, and Port-au-Prince.
A few dozen centimetres is all it takes to change everything: more frequent flooding, storm surge inundation, saltwater intrusion into groundwater.
Erosion, Disappearance, Displacement
The most visible consequence is coastal erosion. Beaches are retreating — sometimes by several metres a year.
The direct effects:
- loss of habitable land
- roads and utilities under threat
- hotels and tourism infrastructure exposed
- entire villages that will be forced to relocate in the medium term.
The question of climate displacement is no longer abstract in the Caribbean.
Mangroves and Reefs: The Last Lines of Defence
Mangroves and coral reefs play a critical role. They absorb wave energy, limit erosion, and protect coastlines. The problem is that they are disappearing too — victims of urbanisation, pollution, and warming waters. When the mangrove retreats, the sea advances. Simple. Brutal.
A Major Economic Challenge
Tourism, fishing, ports, housing, industrial zones — everything is affected. In some Caribbean territories, more than 60% of economic activity is concentrated along the coastline.
Every storm costs more than the last. Insurers are pulling out. Public budgets are buckling.
Adapt or Endure
The Greater Caribbean can no longer afford to hesitate. Strategic retreat of coastal development, protection of natural ecosystems, new building standards, a rethink of coastal planning — these are no longer comfortable political choices. They are decisions of territorial survival. Rising sea levels directly call into
