海水かいすいよく
kaisuiyoku

Noun

1. swimming in the ocean; sea bathing; seawater bath; going for a dip in the ocean

ハワイではいちねんちゅう海水かいすいよくたのしめる。
hawaidewa ichinenchū kaisuiyokuga tanoshimeru.
In Hawaii, we can enjoy swimming in the ocean all year round.