潟湖

1. Origins, structure, and basic meaning

• Structure: The geographic term 潟湖 is read せきこ and means a lagoon separated from the open sea by a sandbar or similar formation.
• Basic usage: It is viewed behind a sandbar or studied as a habitat where migratory birds gather.

2. Common pitfalls and similar expressions

• A lagoon behind a sandbar
  • This refers to a lagoon extending behind a sandbar and serving as a gathering place for migratory birds. Its geographical setting differs from the open sea or an ordinary artificial pond.