Baby Stingrays with Cute Little Feet

I never saw a baby stingray. Or at least I never saw one in this posture, so close, with its belly on clear aquarium glass. I am ashamed because I never knew that the stingrays have feet. As you can see in this video, these cute baby stingrays look like mammals, not like a fish. (The stingray is related with the shark, which is a fish).