Why is a sea horse the slowest swimmer?

Seahorses are considered the slowest swimmers among fish due to their unique anatomy and swimming method. They primarily use their dorsal fin to propel themselves forward, which beats rapidly but generates minimal thrust. Additionally, their elongated bodies and the lack of a streamlined shape create drag in the water, further inhibiting their speed. As a result, seahorses rely on their ability to camouflage and anchor themselves to vegetation rather than swift movement to evade predators.