According to the author, what is the ultimate purpose of exploring the deep sea?
To discover prehistoric sea monsters like the megalodon.
To map the ocean floor better than we map Mars.
To ensure the survival of a rapidly growing human population.
To test new submersible technologies.
What identities does the author have?
businessman
scientist
conservationist
journalist
peacekeeper
tourist
Ironically, which of the following maps is currently more accurate and highly detailed?
The map of Earth's deep sea floor.
The map of the surface of Mars.
The map of the Mariana Trench.
The map of the Moon's dark side.
Although we knew they existed for centuries, in what year did scientists finally film a live giant squid in its natural habitat?
1953
1988
2012
2018
To explain why we must explore the deep sea, the author compares the ocean to which of the following objects?
A giant blind box
A complex antique watch
An endless treasure house
A precise computer
In the end，the author compares all the different types of deep-sea discoveries (new species, "extinct" species, etc.) to pieces of a
ticking clock
jigsaw puzzle
hidden treasure
blank map