Beaches along the Mediterranean are slowly disappearing. CNN Meteorologist Allison Chinchar explains why climate change is at least partly to blame.

Alexandria

Mediterranean beaches are experiencing significant coastal erosion, primarily due to rising sea levels linked to climate change. In Tunisia, over 35% of beaches are eroding, affecting tourism, fishing, agriculture, and infrastructure. The Kerkennah archipelago has seen severe shoreline loss, attributed to both natural factors and human development along the coast.

In Alexandria, Egypt, the effects are particularly stark, with building collapses increasing tenfold over two decades and more than 7,000 structures identified as at risk. The Mediterranean Sea is warming faster than many other bodies of water, causing sea levels to rise and encroach up to 20 meters farther inland. While solutions such as breakwaters and sand replacement exist, their implementation has not kept pace with the rate of erosion, prompting scientists to urge immediate action.

Mediterranean beaches disappearing due to coastal erosion

Some Mediterranean beaches are slowly disappearing. That's because climate change is causing coastal erosion, CNN's Alison Chinchar explains. Summer is in full swing on Mediterranean coasts, but at many of the beaches, something feels smaller. The culprit is coastal erosion. As climate change drives sea levels to rise, scientists say shorelines are retreating and it's threatening far more than summer fun. In Tunisia, more than 35% of the country's beaches are eroding, according to a 2021 World Bank report, affecting tourism, fishing, agriculture and infrastructure. This fisherman and beachfront restaurant owner relies on the short yet vital tourism season and every year, he watches the shore he depends on slowly wash away. All of this used to be filled with sand. The sea ate it away. Look at these rocks. It's clear the stone wasn't here before, but the sea has worn it down. The sea pushed further in. The low-lying archipelago of Kerkennah, off the coast of Tunisia, has seen particularly harsh erosion from the global phenomenon. Over the last 30 years, we've observed significant erosion of beaches in Kerkennah due to natural climatic factors, mainly rising sea levels caused by increasing temperatures and human factors such as concentrating many buildings right on the coast, which has blocked the shoreline's natural evolution. On the other end of the Mediterranean, in Alexandria, Egypt, yet another devastating reality for many. Foundations are cracking and buildings are crumbling. Buildings are crumbling as water infiltrates sandy substrate eroding buildings from the bottom up. A study published in the journal Earth's Future found that coastal building collapses in Alexandria have increased tenfold over the last 20 years and identified more than 7,000 at risk of collapse. I used to live in another apartment before in a building and it eventually got slanted. I mean, after two years, we were all living like this, meaning all of us. Sea levels in the Mediterranean rise faster than many other bodies of water, partly because its shallow sea basin is warming faster. These images show how sea levels have changed over 22 years, with the water now reaching up to 20 meters farther inland than before. For many people that see the climatic changes as something that's gonna happen in the future, we don't need to worry about it. It's actually happening right now, right here. The solutions, breakwaters, sand replacement, and demolition remain slow to catch up to the rising tide, but scientists say the time to act is already slipping away. Alison Chinchar, CNN.

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Breakdown