submersible
🇺🇸
/səbˈmɜːrsəbl/
🇬🇧
/səbˈmɜːsəbl/
designed to operate or be used underwater
The marine biologist used a submersible camera to capture footage of the deep sea creatures.
a vehicle or device that can operate underwater, typically for short periods
The research team deployed a submersible to explore the ocean floor.