Marlon Humphrey and other Ravens want to learn how to swim. Luckily for them, they landed the best teacher available: Michael Phelps.

Cornerback Marlon Humphrey posted a video on social media asking 23-time Olympic swimming champion Michael Phelps — a Baltimore native — for swimming lessons. The video includes Humphrey, tackle Ronnie Stanley, safety Kyle Hamilton and tight end Charlie Kolar standing in the pool.

Michael Phelps may not be able to help his hometown NFL team on the field, but he plans to give them a hand in the pool. The 23-time Olympic gold medalist and Baltimore native has offered to help Ravens players learn how to swim at the team's new aquatics center.