Meaning of the word undersea in English

What does undersea mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

undersea

US /ˌʌn.dɚˈsiː/
UK /ˌʌn.dɚˈsiː/

Adjective

1.

below the surface of the sea:

Example:
undersea exploration
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