Here's a scuba diver making friends with a fish!
Click on image for full size
Courtesy of Corel Photography
Do you know what scuba stands for? It means self-contained, underwater breathing apparatus. What does that mean? Well, it means that divers carry their air with them when they dive!
There are different types of scuba, each one different from the others. Which one divers use depends on how deep they are going to dive and how long they will be underwater.
People can train to be divers all over the world!
You might also be interested in:
Look at this picture! The light blue parts are coral reefs just under the water’s surface. How many reefs do you see? The crew of the International Space Station (ISS) took this picture while looking...more
An aquifer is the name for a layer of rock which is capable of holding a large amount of water. Some layers are better at holding water than others, for example a layer of sandstone can hold a good deal...more
Limestone is an example of a carbonate. Other examples of carbonates include calcite, dolomite, and marble. Limestone dissolves easily in rainwater, especially rainwater which is loaded with carbonic acid....more
The deep ocean waters are under pressure and are much colder than layers of the ocean which are closer to the surface. Dissolved carbon dioxide seems to be absent from the deep ocean water and as a result...more
Have you ever left a glass of water out for a long time? Did you notice that the water disappears after a few days? That's because it evaporated! Evaporation is when water passes from a liquid to a gas....more
The water at the ocean surface is moved by powerful wind. The wind is able to move the top 400 meters of the ocean. This moving water is called surface ocean currents. Surface ocean currents form large...more
Rivers are very important to Earth because they are major forces that shape the landscape. Also, they provide transportation and water for drinking, washing and farming. Rivers can flow on land or underground...more