A seahorse is a type fish. It has a mild resemblance to a horse, at least its' head does. They also have the ability to change color.
When the TroubAlert alerted the Super Friends to the danger of a waterspout in the South Atlantic, Aquaman said: "Great galloping seahorses!"
- ↑ As seen in Professor Goodfellow's G.E.E.C.
- ↑ As seen in Gulliver's Gigantic Goof.