Elephant cools off with an underwater nap using trunk as snorkel

Watch as this adorable Asian elephant cools off with an underwater nap, using his trunk as a snorkel.

Colonel, 29, weighs almost five tonnes and is one of seven Asian elephants at the Fort Worth Zoo in Texas.

In the video, Colonel can be seen beating the heat by taking a nap on the floor of his pool.

Whenever he needs to breathe, he just pops his trunk out.