Limno-glacial is a big word that describes a special place where a river meets a lake or sea.
Imagine you have two toys, a toy boat and a toy duck. When you put the toy boat in the water, it makes ripples that move away from it. If you put the toy duck in the same place, the ripples from the toy boat might bump into it and make it move a little bit.
Now imagine a river that is like the toy boat and a big lake or sea that is like the toy duck. When the river flows into the lake or sea, the water from the river starts to mix with the water from the lake or sea. This place where they meet is called a limno-glacial environment.
Because the water from the river is usually colder and carries more rocks and mud, it can change the way the water in the lake or sea behaves. The water might become cloudy or choppy, and different types of plants and animals might start to live there.
Scientists study limno-glacial environments to learn more about how rivers and lakes or seas affect each other and how they work together. It's like playing with toys and experimenting with how they interact with each other!