Meromictic

Okay, kiddo, have you ever heard of a lake? It's like a really big pool of water, right? Well, imagine if that lake was divided into two different layers that never ever mixed. That's what we call a meromictic lake!

Now, let's go a little deeper (not literally though because we can't breathe underwater). In a normal lake, water moves around a lot. The wind can stir it up, animals and plants can disturb it, and the seasons can change it. This means that the water in different parts of the lake mixes together all the time.

But in a meromictic lake, there is a layer of water at the bottom that never mixes with the rest of the water. That's because the water at the bottom is different in a special way. It's much saltier or much denser than the water at the top, so it stays at the bottom.

This creates two different layers in the lake that are like two separate worlds. The top layer still moves around and changes with the weather, but the bottom layer stays the same all year round. That's why meromictic lakes can be really important for scientists who want to study water and all the things that live in it.

So, to sum it up, a meromictic lake is like a two-layered lake where the bottom layer of water never mixes with the top layer of water, creating two different worlds that scientists like to study. Cool, right?