Swimming in a beautiful body of water can be an incredibly relaxing experience. Who doesn’t love taking a dip on a hot summer’s day? Yet, there are a few places in the world where a simple swim may turn deadly. Here are some bodies of water you might not want to dive into.

1. Boiling Lake, Dominica

This name of this lake says it all! Discovered in 1870 by two English explorers, the temperatures found in the scalding hot waters of this Caribbean lake range anywhere from 180 to 197 degree Fahrenheit. If you go further into the centre of the lake, you’ll find the temperature gets even hotter—to the point where an accurate measurement cannot be taken. It’s believed that the scorching temperatures come from the fact that the lake sits on a pile of molten lava; the lava’s gases shoot up into the water which then heats up the water to a deadly degree.


2. Citarum River, West Java, Indonesia

While at one point, this river was incredibly safe to swim in, it was thanks to humans that this body of water is now toxic. Thanks to the more than 500 factories that line the river, plus the area’s lack of sanitation or modern plumbing, the river has become one of the most polluted, trash-filled bodies of water in the world. To make matters worse, it is the area’s main water supply. Local resident use the Citarum River for drinking, bathing and boiling water.Citarum River, West Java, Indonesia