Seahorse With The Translucent Body In Various Colors And Shades. A Seahorse Is Any Of 46 Species Of Small Marine Fish In The Genus Hippocampus. "Hippocampus" Comes From The Ancient Greek Hippókampos, Itself From Híppos Meaning "Horse" And Kámpos Meaning "Sea Monster" Or "Sea Animal".. Size 3.25 In H X 1 In W X 2 In D. . Purchase Includes One Ornament.