Heather Moore Niver 
20 Fun Facts About Stingrays [PDF ebook] 

Stingray’s glide gracefully through the water; they seem like alien creatures with their wide, flat bodies and slender tails. They drift to the sea floor and use their flat bodies to stir up the sand and bury themselves. Many stingrays use their deadly stingers to catch prey. Some have powerful mouths for crushing shells. Astonishing photographs allow readers to see these fierce fish in their natural habitat.