フリーダイビング

noun

freediving; free-diving

Underwater diving without breathing apparatus, relying on breath-hold. Often used in sports and recreational contexts.

See also: 素潜り

• 彼かれはフリーダイビングの世せ界かい記き録ろくを持もっている。

  He holds the world record for freediving.

noun

skin diving

Similar to freediving but often implies shallower, more casual breath-hold diving, sometimes with basic gear like mask and fins. The distinction from freediving is subtle and may overlap in common usage.

• 沖おき縄なわでフリーダイビングを楽たのしんだ。

  I enjoyed skin diving in Okinawa.