Nine things you don't know about seahorses

Seahorses have long been a popular attraction in public aquariums, but they remain mysterious. They are a fish with a difference in that they swim in an upright, vertical position. They have flexible necks and long, tubular snouts that point downward, giving them the appearance of a horse's head. Their lower bodies form a flexible, prehensile tail, which is square in outline and can wrap around objects. There are at least 47 known species, all belonging to the genus Hippocampus, a Greek term that means "horse sea monster." So what else should we know about this creature?