Scuba diving is a fun and exciting sport. People who scuba dive wear the special gear for the activity and then dive into the ocean to see the magnificent undersea world. In this picture, the person is scuba diving and has seen a lot of fish. Point at the fish and the scuba gear for your kids to see. Then, help them count the two groups of scuba gear below each triangle, and then draw a line between the two numbers that make 18.