The ancients believed they were the adult-form of the small fish we call the "sea-horse". Hippokampoi were the mounts of Nereid nymphs and sea-gods, and Poseidon drove a chariot drawn by two or four of the creatures.
Who created hippocampus?
In 1587, Julius Caesar Arantius (a.k.a. Giulio Cesare Aranzi, 1530-1589), a surgeon and anatomist whose pioneering work in the field included discovering different anatomical structures of the human body, discovered the part of the brain in question and compared its appearance to—you guessed it—a hippocampus, or ...
How was the hippocampus made mythology?
The Hippocampus in Greek and Roman Mythology
According to Homer's Iliad, Poseidon's chariot was pulled by two or more beautiful hippocamps which is why the beasts became closely associated with the Greek god of the sea.