Mysterious Oceans

The deep ocean covers how much of Earth's surface?

How deep is the deepest part of the ocean?

What is the deepest part of the ocean called?

The environment in Challenger Deep is very nice, and a great place for ocean life to live.

We know all about the deep ocean.

What was invented to be able to explore the deep ocean?

What percentage of the underwater world has been seen?

Life is sparse at the bottom of the deep ocean.

Scientists have found cracks in the surface of the deep ocean that take in water and heat it up. How does this effect the habitat around it?

The Pompeii worm has a fleece of bacteria on its back and scientists believe it is there to ___________ the worm.