ELI5: Explain Like I'm 5

Diving plane

A diving plane is a type of device that helps swimmers move through the water faster. It is shaped like an airplane and it is made of plastic or metal. The front of the plane is pointed, which helps it to cut through the water. At the back of the plane are two wings, which help to lift the plane up and make it easier to glide through the water. When a swimmer puts the plane underneath their arms, it helps them move through the water faster and with less effort. Using a diving plane can definitely help swimmers swim faster, and it can also help to improve their form and technique.