seiuchi セイウチ

Translation

seiuchi means "Walrus" in English.

seiuchi is normally written with katakana, as セイウチ.
seiuchi written with hiragana is せいうち.

seiuchi written with kanji is 海象.
These are jouyou kanji 常用漢字, taught in the fourth year of shougakkou 小学校.

seiuchi may also be written as 海馬.

seiuchi is a jukujikun 熟字訓 reading for 海象 in this word. That is: those kanji are only read that way when they come together like that.

Beware: some kanji that are difficult to handwrite are easy to type on the computer, which may skew the usage statistics.