As its name indicates, the Spiny Seahorse — not to be confused with the hedgehog seahorse — features an array of spines that act as armor.
Measuring up to 7 inches, its coloration ranges from pale yellow to dark brown, often with white or black spots, which allows it to blend into its surroundings in the Indo-Pacific region.
Regarding diet, it feeds on small crustaceans, plankton, and other tiny marine organisms using its tubular snout. During the breeding season, the female Spiny Seahorse deposits her eggs into the male's brood pouch, which he nurtures until they hatch.