deep-sea
adjective
ˈdēp-ˈsē 
: of, relating to, or occurring in the deeper parts of the sea
deep-sea fishing
Synonyms
- blue-water
- oceanic
- pelagic
See all Synonyms & Antonyms 
Word History
First Known Use
1626, in the meaning defined above
deep-sea
adjective
as in oceanic
of, relating to, or occurring in the open sea chartered a boat to do some deep-sea fishing Synonyms & Similar Words
Relevance
- oceanic
- marine
- pelagic
- deepwater
- maritime
- blue-water
- nautical
Antonyms & Near Antonyms
- littoral