noun
freshwater diving
Diving in freshwater environments such as lakes, rivers, or quarries, as opposed to saltwater diving.
淡水ダイビングでは浮力の調整が海水より難しい。
In freshwater diving, buoyancy control is more difficult than in seawater.
彼は湖で淡水ダイビングのライセンスを取った。
He got his freshwater diving license at the lake.