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The floor of the sea or the ocean.


the ground under the sea


(ˈsiˌflɔr, -ˌfloʊr)

the solid surface underlying a sea or ocean. Also called seabed.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.seabed - the bottom of a sea or oceanseabed - the bottom of a sea or ocean  
abyssal zone - the deep sea (2000 meters or more) where there is no light
bed, bottom - a depression forming the ground under a body of water; "he searched for treasure on the ocean bed"
continental shelf - the relatively shallow (up to 200 meters) seabed surrounding a continent
bathyal district, bathyal zone, continental slope - the steep descent of the seabed from the continental shelf to the abyssal zone
neritic zone - the ocean waters from the low tide mark to a depth of about 100 fathoms
twilight zone - the lowest level of the ocean to which light can reach


sea bed [ˈsiːbɛd] nfonds mpl marins
References in periodicals archive ?
The expedition team - funded by Microsoft co-founder Paul Allen - announced that the wreckage of the Lexington, crippled and then scuttled on May 8, 1942, during the Battle of the Coral Sea, was found on the seabed more than 500 miles off Australia's east coast.
According to a report, citing an update posted Tuesday by Malaysia's MH370 Response Team, Ocean Infinity's search ship, the Seabed Constructor, was able to launch all eight of its autonomous underwater vehicles following favorable weather conditions.
The Seabed 2030 initiative is being facilitated by the General Bathymetric Chart of the Oceans (GEBCO) project in partnership with The Nippon Foundation (NF) as a means to inform global policy, improve sustainable use and advance scientific research.
For roughly the last two decade (the period 1993-20140) the team calculates the increase in total ocean load has pushed the seabed by about 0.
Northrop Grumman and a team of industry partners demonstrated a seabed warfare mission using a slew of unmanned systems at the Navy's recent advanced naval technology exercise, a company official said.
A better map of the seabed would improve our understanding of climate and weather systems and even help predict disasters - the shape of the seafloor helps directs ocean circulation as well as the course of tsunamis.
The oceanographers can learn how the presence of structures on the seabed can change how sediments are carried in the water or deposited.
The International Seabed Authority and the Precautionary Principle: Balancing Deep Seabed Mineral Mining and Marine Environmental Protection
M2 EQUITYBITES-December 28, 2016-Study shows Basslink Subsea Power Cable impact on seabed minimal
TELECOMWORLDWIRE-December 28, 2016-Study shows Basslink Subsea Power Cable impact on seabed minimal
It's understood the ship is carrying out work to protect the CATS North Sea gas pipeline, which runs along the seabed and into a Teesside processing terminal, by dropping rocks around it.
The world's first deep sea mining robot sits idle on a British factory floor, waiting to claw up high grade copper and gold from the seabed off Papua New Guinea (PNG) - when a wrangle over terms is solved.