WHAT IS A GLIDER?
An underwater glider is a small submarine that’s autonomousâ€“which means there’s nobody inside it, one reason being that nobody could possibly fit in there: it’s only about 2 meters long and weights around 50 kilos.
Underwater gliders are used to observe the seas and the oceans. Scientists place them in the water and the gliders collect interesting data about the temperature, the amount of salt and oxygen in the water, and so forth. They do so by using sensors that measure that information and much more (depth, etc.)