The tuck dive is used when you are stationary at the surface. Use the following procedure when using the tuck dive.

1. With your body stationary and upright at the surface, lift your knees up toward your chest.
2. Use your hands and fins to roll your body into a head-first position.
3. Quickly extend your legs straight up out of the water. The weight of your legs will push your body below the surface.
4. Begin kicking as soon as your fins enter the water. Remember to equalize your ears as you descend.