海かい中ちゅう展てん望ぼう台だい

noun

undersea observatory

A structure, often with underwater windows, built to allow observation of marine life and the sea floor.

• 海かい中ちゅう展てん望ぼう台だいから色いろとりどりの魚さかなを見みた。

  We saw colorful fish from the undersea observatory.