DYK that seahorses are one of very few fish species that swim in a vertical position? This is because their stiff, armored bodies are not flexible. They maneuver through their underwater habitat using their dorsal fin to propel them forward, and their pectoral fins to help them steer. But their tails are not just for show, they are uniquely strong and an incredibly useful tool for these weak swimmers. Like some monkeys and chameleons, sea horses have prehensile tails, which they use to grasp sea