
Lined seahorse, Hippocampus erectus. Delicate and beautiful seahorses get their name from the ancient Greek hippos meaning “horse” and kampos meaning “sea monster.” The genus “Hippocampus” covers the 54 species of marine fish. The lined seahorse is also known as northern seahorse or spotted seahorse. Its length is about 6 inches (15 centimeters) and it can live for up to four years. Photo #1 by Brian Gratwicke