Why are stingrays so damn happy all the time?

For over a hundred million years, the stingray has roamed the world's oceans as an almost mythological animal: extraordinarily graceful, yet potentially lethal.

Another little-known fact about them: they're always thrilled out of their damn minds just to be alive, as evident by the gigantic smiles they've got permanently plastered across their faces.

Don't believe us? Take a look and see.

Can't say we didn't tell you so.

Keep smilin', keep shinin, fellas.