How Sea Level Rise Is Decimating Coastlines Around The World

Climate change is no longer a distant threat—it has already begun decimating coastlines worldwide due to sea level rise. From Florida to the Solomon Islands, the impact of rising sea levels varies, but the crisis is universal. Small Island Developing States contribute to only about 1% to global emissions, yet they face some of the harshest consequences, including severe hurricanes, rising ocean temperatures, acidification, and accelerated sea-level rise, according to the United Nations Development Program. For SIDS, rising seas threaten the extinction of entire communities, potentially displacing populations from lands inhabited for centuries.

NASA satellite data paints a stark picture as since the 1990s, global sea levels have risen by an average of 0.13 inches per year, amounting to roughly 4 inches as of July 2024. Coupled with a rise in global temperatures, over 1°C since 1995—these trends fuel stronger storms, heavier rainfall, and increasingly frequent flooding. This twin threat of rising temperatures and sea levels is placing coastal regions under unparalleled strain.

Coastlines Under Siege Due To Sea Level Rise

Florida, while not an island, is among the U.S. most vulnerable to sea-level rise. The Florida Climate Center reports that sea levels in the state have risen by 8 inches since the 1950s, endangering homes, businesses, and critical infrastructure. Across the Pacific, the Solomon Islands have already witnessed five islands vanishing over the past two decades, as documented by Live Science. Similarly, the Maldives, Kiribati, Tuvalu, and the Marshall Islands face threats to their culture, history, and ecosystems as rising waters encroach.

In the Caribbean, Jamaica’s Hellshire Beach—a popular seafood destination—is receding at an alarming rate, forcing local businesses to build reinforced barriers against advancing waves. Panama is also losing ground, with its Environmental Ministry projecting a 2.01% loss of coastal land by 2050 in a recent study. The Gunas of Gardi Sugdub, a coastal community, initiated relocation plans in 2010. By June 2024, supported by the National Government, Inter-American Development Bank (IDB), World Bank, and NGOs, 300 families began resettling on the mainland, though some community members opted to remain on the island.

Actions And Commitments Against Sea Level Rise

At COP28, global leaders focused on climate change’s existential threat to SIDS. The Intergovernmental Panel on Climate Change warns that a 2.5°C temperature rise by 2100 could drive sea levels up by 58 cm, displacing an estimated 430 million people worldwide. In response, the creation of the Loss and Damage Fund—starting with $770 million in pledges from countries including France, Italy, and the UAE—represents a step toward meaningful financial relief. However, as Polytechnique Insights notes, this fund addresses a mere 0.2% of SIDS’ adaptation needs. Barbadian Prime Minister Mia Mottley cautioned that without further action, SIDS could become “uninsurable and un-investible,” risking catastrophic economic consequences.

The Benefits Of United Action Against Sea Level Rise

Addressing climate change’s impacts on SIDS demands a comprehensive approach that includes emission reductions, ecosystem restoration, and resilient infrastructure. Emissions from major polluters must be reduced through accelerated renewable energy adoption and rigorous energy audits that tackle inefficiencies. Immediate actions like building elevated land or seawalls provide short-term protection against sea level rise, while longer-term efforts—such as restoring mangroves and wetlands—offer natural defenses against coastal erosion, enhance biodiversity, and sequester carbon, supporting emissions reduction goals.

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In addition, carbon offset programs like the Blue Carbon Program enable major emitters to invest directly in coastal ecosystem preservation, bringing tangible climate resilience to SIDS. These actions provides multiple benefits as they protect economic assets, preserves cultural heritage, and foster environmental stability. For SIDS, strengthened coastlines and resilient infrastructure not only counter erosion, sea level rise, and flooding but also secure livelihoods and tourism revenues, build local economies, and enhance long-term food and water security.

Coastal erosion and sea level rise are more than environmental threats; they are existential dangers requiring urgent and united action. The costs of inaction are detrimental and includes the loss of unique cultures, communities, and ecosystems. It is imperative that governments, corporations, and individuals alike commit to reducing emissions, supporting renewable energy, and funding climate adaptation for those most affected. It is only through transformative change that we can protect our shared future.