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because of ocean trenches are so deep that man made water crafts can't go that low

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Q: How deep does a ocean have to be to be called a deep ocean?
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Related questions

What is a crack in the ocean floor called?

Oceanic trench.


What happens to the ocean floor at the deep ocean trenches?

what happens is the ocean floor does not just keep spreading.instead, it sinks beneath deep underwater canyons called deep- ocean trenches


The feature on the ocean floor at C is called a?

deep ocean trench


What is deep ocean?

The deep ocean is often called the Abyssal Zone


Deep depression in the ocean floor is called?

trench


The rising of cold currents to the ocean surface is called?

The rising of the deep cold currents to the ocean surface is called


What is a valley underwater called?

The Marianas Trench, and many other deep undersea valleys, can be found on the ocean floor.


What is the deep v shaped valley that lies along the bottom of the ocean?

This iis a trench.Also ocean basin is the deepest part of the ocean.


Why does deep-ocean trench occur?

At deep-ocean trenches, subduction allows part of the ocean floor to sink back into the mantle. The ocean floor does not just keep spreading. Instead, it sinks beneath deep underwater canyons called deep-ocean trenches. Where there are trenches, subduction takes place.


Why does deep ocean trench occur?

At deep-ocean trenches, subduction allows part of the ocean floor to sink back into the mantle. The ocean floor does not just keep spreading. Instead, it sinks beneath deep underwater canyons called deep-ocean trenches. Where there are trenches, subduction takes place.


What is deep holes in the ocean floor called?

trenches


What are ecosystems in the ocean called?

Ecosystems in the ocean are called marine ecosystems. They can be tidal, coastal, or deep sea. They are typically salty.