Diving equipment is a bunch of special tools, clothes and things that help people breathe and see when they go underwater to explore.
First, people wear something called a wetsuit, which is like a big, thick, black or colorful waterproof jacket and pants that goes over their arms and legs. The wetsuit helps keep the person warm and protects them from getting hurt on sharp or rough things in the water.
Then, they wear a thing called a mask over their eyes and nose so they can see better underwater. Some masks cover just the eyes while others also cover the nose. The mask keeps the water out of their eyes and helps them see clearly underwater.
Next, they wear special fins on their feet, almost like big flippers, which make it easy for them to swim around quickly and easily in the water, just like a fish!
Then, there's something called a regulator, which is like a straw that helps people breathe when they're underwater. The regulator is attached to a long hose, which goes all the way up to a big tank of air on dry land called a scuba tank. The scuba tank has a lot of air inside and the regulator helps people breathe in this air.
Finally, people wear a buoyancy control device or a "BCD," which is a special vest that can help them float to the surface or sink to the bottom of the ocean. The BCD is like having a special button that can help them control how much air is in their suit so they can move easily underwater.
So, with all these tools and things, people can breathe and see underwater, move around easily, and explore the ocean like a pro!