9781422276730

The frilled shark is a newly discovered deepwater shark species.

TEXT-DEPENDENT QUESTIONS:

RESEARCH PROJECT:

1. How deep is the Mariana Trench? 2. What kind of shark may make humans think they saw a sea serpent and why? 3. What special conditions in deep ocean water make it necessary for the sharks that live there to have characteristics that are different from their shallow-water relatives?

Before James Cameron dove down 7 mi. (11.3 km) to the bottom of the Mariana Trench, there were two others who did the same. Who were these men, and what was their story? How did the two trips to the same spot differ? Do you think anyone else will be able to stay on the bottom longer in the future? Why or why not?

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