堡ほ礁しょう

noun

barrier reef

A coral reef roughly parallel to the shore and separated from it by a lagoon. Technical term in geography and marine science.

• オーストラリアのグレートバリアリーフは世せ界かい最さい大だいの堡ほ礁しょうです。

  The Great Barrier Reef in Australia is the world's largest barrier reef.