We've all watched ducks dive underwater looking for a meal or a pelican plunge into the water after a fish, but one thing we've certainly never seen is a bird completely submerge itself and swim ...

This bird has a unique way of hunting for a meal!

Anhingas are less buoyant than many other water birds, making them more efficient divers. When an anhinga swims at the surface, most of its body is usually underwater with only its head sticking out.