What is Caspian Sea?

The Caspian Sea is a really big lake that lives between some countries, like Russia and Iran.

Imagine you have a huge bathtub in your house, not just for washing your hands, but big enough to swim in. That's kind of what the Caspian Sea is, except it’s outside and even bigger than most bathtubs. It has water, like the ocean, and there are fish swimming around in it, just like in a pond.

The Caspian Sea isn’t connected to the rest of the oceans, it’s like a closed room where all the water stays together. That makes it feel a bit like being in a giant lake instead of an ocean.

Sometimes people use it for trading, just like how you might trade toys with your friends. Ships bring things from one country to another across this big sea, and sometimes there are even oil and gas under the water, kind of like treasure buried beneath the sand in a sandbox!

So the Caspian Sea is both a fun place for fish to live and an important path for people to send stuff all around.