Supplies+used+to+study+ocean+depths

There are many things you can use to study the ocean basin like submersibles, sonar, submarines, and submarine robots. Submersibles are research vessels and enable oceanographers to study ocean depths. Sonars, is a system that uses acoustic signals and returned echoes to determine the location of objects or to communicate. And, let’s not forget submarine robots, which they are way better to study the ocean because they are so small that have less pressure and can go deeper. Also, it can take photographs without having the need to worry about the time because they don't need air.

This picture shows how a sonar works. In this picture we have the most common submersible known as the "alvin".