海马 Traditional form: 海馬 Pinyin (reading): hǎimǎ Definitions: (zoology) sea horse (anatomy) hippocampus (abbr. for 海馬體/海马体 (hǎimǎtǐ)) Characters: 海 - sea, ocean; maritime 马 - horse; surname Traditional characters: 海 - sea, ocean; maritime 馬 - horse; surname