Quiz · The Hidden World of Deep Sea Creatures

Question 1What is the talk mainly about in the deep ocean?

How ordinary submarines dive below the surface Why sunlight never reaches the deepest ocean water How deep sea creatures survive and why their world is largely unexplored The history of volcanic vents on the ocean floor

Question 2Why do many fish in the deep sea produce their own light?

To warn submarines to stay away To keep themselves warm in the freezing water To frighten the giant tube worms To attract prey or to find a mate

Question 3What can be inferred about most deep sea species?

They have never been seen or named by humans They all live near hot volcanic vents They eat only once in an entire year They were photographed long ago by scientists