Define Ocean floor *
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Answer:
The seabed is the bottom of the ocean, no matter how deep. All floors of the ocean are known as 'seabeds
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Answer:
The base of the ocean is commonly called the OCEAN FLOOR.
The SIMA layer forms the ocean floor, it ia composed of granitic rocks and has a density of 3.0g/cm^3
The seabed is the bottom of the ocean, no matter how deep. All floors of the ocean are known as 'seabeds'.
Beneath the smooth ocean surface extends an underwater landscape as complex as anything you might find on land. While the ocean has an average depth of 2.3 miles, the shape and depth of the seafloor is complex. Some features, like canyons and seamounts, might look familiar, while others, such as hydrothermal vents and methane seeps, are unique to the deep.

This graphic shows several ocean floor features on a scale from 0-35,000 feet below sea level. The following features are shown at example depths to scale, though each feature has a considerable range at which it may occur: continental shelf (300 feet), continental slope (300-10,000 feet), abyssal plain (>10,000 feet), abyssal hill (3,000 feet up from the abyssal plain), seamount (6,000 feet up from the abyssal plain), ocean trench (36,000 feet), and volcanic island (above sea level). (NOAA Office of Education)