Jellyfish are found in tropical waters, temperate waters, shallow waters, oceans with a depth of about 100 meters, and even freshwater areas. Jellyfish existed as early as 650 million years ago, even before dinosaurs. There are more than 250 species of jellyfish in the waters of the world, and they are distributed in waters all over the world. All live in the ocean. Let's take a look at the dreamy jellyfish together.