SMILE! (笑顏) @ Grand Cayman (開曼群島)
The nostrils, mouth and gill slits on the underside of a stingray compose a big "SMILE"!
It is normally not easy to see the undersides of stingrays since they usually agitate the sand and hide beneath it. A place called "Stingray City" in Grand Cayman consists of a large, shallow reserve where the rays live, and snorkeling is possible since the rays are used to the presence of humans. The rays in Stingray City are so active that one of them even "climb" on my camera.