Did you know it takes longer to drown in saltwater than it does in freshwater? Did you know which water hurts the most to drown in? Kidzworld explains the difference between waters.
There are five major biomes in the world: aquatic, desert, forest, grasslands and tundra. Kidzworld's got the 411 on the aquatic biome.
Oceans cover 70% of the Earth's surface, but how much do you know about them? Do you know why it's blue? Or why it's so salty? Get the 411 here!
We've been hearing a lot about stingrays ever since Steve Irwin was killed by one. We take a look at fish behind the headlines.