スキンダイバー

noun

skin diver

A person who dives without a wetsuit or scuba gear, typically in warm water. The term is a direct loan from English and is used in Japanese diving contexts.

• 彼かれはスキンダイバーとして、素す潜もぐりで魚さかなを捕とる。

  As a skin diver, he catches fish by free-diving.