Hippocampi-What

The hippocampus is the mythological creature shared by Greek and Phoenician mythology, though the name is purely Greek, meaning "horse" and "monster." It is often called a sea-horse in English. Typically the horse is the front part and a coiling, scaly, fish-like tail. The hippocampus became a part of Etruscan mythology, which affects Roman mythology. Neptune often drives a sea-chariot pulled by hippocampi.
Link: http://www.theoi.com/image/P12.4BThetis.jpg