In the shallow-end, legs hip-width apart, hold the noodle in front of you with a shoulder-width grip. Keep your back straight and your legs slightly bent.
Jump and spread your legs - slightly bend your knee - and pull the noodle down at the same time. Make sure to pull the noodle with straight arms, as deep as you can. Jump again, and return back to the starting position.
Inhale as you spread your legs, exhale as you pull the noodle
Use your upper back to pull the noodle and your thigh muscles to spread and close your legs.
Tip: keep your back straight as you perform this exercise.