A group of stingray is called a “fever,” which is an interesting choice. Stingray can be as small as the palm of your hand or as big as 14 feet long! (That includes tail.) Speaking of tails, that’s where a stingray’s stinger is. Stingers grow like fingernails, but can be barbed, serrated, or razor-sharp.
Stingray are very flat, which makes it easy for them to hide on the ocean floor, where they bury themselves in the sand. The most common reason for them to sting a human is because they get stepped on!
In Finding Nemo, Nemo’s teacher is a ray.