1. They Swim Effortlessly
Seriously, those things just glide through the water
2. They Love Swimming with People!
Most notably Stingray City (in the Cayman Islands) which has been a human/stingray hang-out for over twenty years
3. They always look happy
Seriously, those creatures are OVERJOYED right now
7. They can high-five
How many sea creatures (okay besides dolphins and seals and walruses) do you know that can high-five!?