open ocean

Far from land

Open ocean refers to the vast expanses of sea far from coastlines and continental shelves, where the water is deep and land influences are minimal.

Scientists and sailors distinguish it from coastal waters: The vessel left the harbor and headed into the open ocean.

The term emphasizes remoteness and exposure—no shelter, no nearby shore, just water in every direction.

Opposites
proximity to land

open oceancoastal waters

Sea areas near shores

nearshore · shoreline · continental shelf · estuary · harbor

enclosure/boundedness

open oceaninland sea

Landlocked marine body

lake · pond · reservoir · swimming pool · lagoon

water body size/scale

open oceanpond

Small still body

puddle · pool · creek · stream · brook

Family

open, ocean, opening, opened, oceans, openness, opener, oceanic, reopen

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G