Endorheic basin

Endorheic basins are like giant bathtubs on the land! Water from rain and rivers flows into them, but instead of finding a way to the ocean, it just stays there. Sometimes, this water forms big lakes, or it might soak into the ground.

These places can be found all over the world, from hot deserts to snowy mountains. They are special because they are closed systems, meaning water doesn't escape to the sea.

Because the water can't escape, it can get very salty over time. As the sun shines, the water evaporates, but the salt is left behind. This is how some of the saltiest lakes in the world are formed! Think of the Great Salt Lake in the United States. These basins can be huge, sometimes as big as a whole country! They are important homes for plants and animals that can handle salty water.

Many endorheic basins are found in dry, desert areas. This is because there isn't much rain, so any water that does arrive gets trapped. But they can also be in places with lots of snow! When the snow melts, it fills up the basin. Some of the biggest endorheic basins are in Central Asia, like the Caspian Sea, which is actually a giant lake!

Even though water doesn't flow out, life finds a way! Special plants and animals have learned to live in these unique places. In salty lakes, you might find tiny creatures that love the salt. In drier basins, animals might travel long distances to find water. These basins are like natural experiments, showing us how life adapts to different conditions on our amazing planet.