Jisho

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Noun
1. bottom of the ocean; seafloor; seabed
Noun or verb acting prenominally
2. undersea; submarine
Wikipedia definition
3. SeabedThe seabed (also known as the seafloor, sea floor, or ocean floor) is the bottom of the ocean.
Read “Seabed” on English Wikipedia
Read “海底” on Japanese Wikipedia
Read “Seabed” on DBpedia
Other forms
海底 【うなぞこ】

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