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Longman Dictionary of Contemporary English
sea floor
noun
EXAMPLES FROM CORPUS
▪ At the outer edge of each shelf, the sea floor plunges precipitously down into the depths.
▪ Distinguishing between active sonar returns from mines and returns from rocks and debris on the sea floor is difficult.
▪ He knows that most of his bottles will become encrusted with algae and settle to the sea floor.
▪ Later still it was found covering extensive areas of the sea floor south of Ireland.
▪ This creature, shaped like a slim leaf about 6 centimetres long, lives half-buried in the sand of the sea floor.
▪ Though they cover more than 70 percent of the Earth's surface, the rocks of the sea floor are virtually inaccessible.
▪ Tiny oceanic microorganisms solidify carbon and oxygen gases dissolved in sea water to produce a salt which settles on the sea floor.

Usage examples of "sea floor".

According to the palace servants, she had been discovered on the sea floor by one of the crab guards and taken to the palace where she had been adopted by the Sea Dragon King.

A hundred miles out across what is now the Indian Ocean, below the deep sea floor, the plates that carry the continents had moved.

As Pacys continued playing involuntarily, an image of a vast labyrinth rising above the sea floor appeared in his mind's eye.

The ship's approach had drawn attention in the form of a dozen fliers that suddenly skimmed from hiding on the sea floor.

Both halves remained active for a time, arms and legs moving desperately but without an ability to control their direction as they dropped slowly to the sea floor.

O'Brien, with his usual precision, had placed the submarine to hover a safe but convenient 15 feet above the sea floor, and exactly head on to the slight current.