Seahorses protect themselves through camouflage, which helps them blend in with their surroundings and evade predators. Seahorses have the unique ability to change color instantaneously, and even adopt the physical characteristics of companion sea plants to which they attach. Seahorses are small ocean-dwelling organisms, and rely on camouflage for self defense as they cannot outswim many ocean creatures or fight them off.
Seahorses belong to the larger class of fish. They belong to the family Syngnathidae, which includes several other sea creatures too. Seahorses come in several species, and range in size from roughly a 1/2 inch to 8 inches long. These creatures live in warmer waters, and thrive in coral reefs, estuaries, mangroves and other aquatic habitats. They vary in natural color, but have the ability to change colors to match their unique surroundings.
Some species, like the Pygmy seahorse, have companion plant species. These seahorses spend the majority of their lives attached to sea fans. They adopt the brilliant hues of their supporting sea fans, which helps them become nearly invisible to potential predators. Seahorses use their long, curled tails to grasp onto the stems of the sea fans, and can even make their bodies appear knobby and twisted like the sea plants.