Credit: SWNS / Collab / Ethan Schmidt

This playful manatee was spotted getting free dental 'water pic' treatment after it repeatedly grinned and rinsed its teeth with drips coming off a boat engine.

The marine mammal is hilariously seen opening its peculiar-looking mouth to catch some of the off-shooting water.

Ethan Schmidt, 19, was vacationing in Pompano Beach, Florida, USA, and caught the not-so-majestic creature trying to quench its thirst.