Nice work and pretty creative!
As for names here's some:

1. Azure: A name meaning "bright blue," reflecting the vibrant color of the ocean.

2. Coraline: Derived from "coral," symbolizing the stingray's ocean habitat.

3. Manta: A name inspired by the manta ray, a close relative of the stingray.

4. Suri: This name means "river" in Quechua, an indigenous South American language, acknowledging the connection between rivers and the ocean where stingrays are found.

5. Zephyr: A name meaning "gentle breeze," representing the smooth and graceful movements of a stingray in the water.

6. Nami: Derived from the Japanese word for "wave," symbolizing the stingray's natural environment.

7. Elestria: A combination of "electric" and "aesthetics," representing the stingray's electric-sensing ability and its stunning appearance.

8. Riviera: Meaning "coastline" in French, reflecting the coastal areas where stingrays are commonly found.

9. Pacifica: Derived from the word "pacific," meaning peaceful, reflecting the serene nature of these creatures.

10. Lumina: A name meaning "illumination" or "inner light," symbolizing the bioluminescent organisms often associated with stingrays.

😃