deep-sea

[deep-see]

adjective

1. of, pertaining to, in, or associated with the deeper parts of the sea.

   deep-sea fishing; deep-sea diver.

deep-sea

noun

1. (modifier) of, found in, or characteristic of the deep parts of the sea

   deep-sea fishing

Word History and Origins

Origin of deep-sea¹

First recorded in 1620–30

Example Sentences

This unusual arrangement creates an entirely new kind of deep-sea environment that supports an exceptionally varied community of organisms.

Read more on Science Daily

While you can’t help but appreciate the cherry red of the deep-sea atolla jellyfish, you will also learn why its unusual pigment persists in the lightless depths.

Read more on The Wall Street Journal

Nato has identified deep-sea cables as part of the world's critical infrastructure.

Read more on BBC

There were memoirs by Arctic explorers, fearless mountaineers, and deep-sea divers who braved the briny deep wearing those newfangled diving costumes.

Read more on Literature

By the 1700s, women divers from Jeju and surrounding islands outnumbered their male counterparts, due in great measure to the fact that so many Korean men had died during wars or deep-sea fishing accidents.

Read more on Literature

Related Words

• aquatic 
• coastal 
• maritime 
• naval 
• saltwater 
• seagoing