How to say "lagoon" in Japanese
Choosing the right word
- 潟かたnounThe common word for a lagoon: a shallow body of seawater separated from the open sea by a sandbar or reef. This is the word you want in ordinary contexts.
- nounThe katakana loanword for lagoon. It denotes the same kind of coastal water body as 潟 but is less common, so 潟 is usually the safer choice; use ラグーン when the borrowed term is preferred.
- 潟湖せきこnounThe technical term for a lagoon in geography, treating it as a class of coastal water body. It is less common than 潟, so it suits scientific or textbook prose more than everyday talk.
- 海跡湖かいせきこnounA technical term, literally "sea-trace lake", for a lake formed from a former bay, cut off from the sea. It stresses that origin and is seldom the everyday word for a lagoon.
For an ordinary lagoon use 潟; 「ラグーン」 is the less common loanword for the same feature; 潟湖 is the technical geographic term; 海跡湖 is a technical word for a lagoon seen as a lake cut off from the sea.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
