The unusual and striking Seahorse can vary in color and markings depending upon the species, though most found in North-Atlantic waters are brown or mottled with subtle colors. They reside mainly amongst seaweed or other aquatic vegetation, which they grasp with their long spiral tails to anchor themselves. They swim vertically, rather than sideways, using their dorsal fins to propel themselves in an undulating motion.
An interesting aspect of seahorse breeding behavior is the fact that the male, rather than the female, essentially raises the juveniles. After breeding, the female will deposit fertilized eggs into his brood pouch where he will guard the developing young as they absorb the yolk. When this stage is complete, up to 150 tiny seahorses, less than half an inch long, will emerge from the pouch and continue their growth, independent of the father.