What is the main point of the first section of the body,
under the heading “Explorer," in paragraphs 2-4?
Sylvia Earle led more than 60 expeditions
to study the ocean.
Sylvia Earle devoted her life to advancing
undersea exploration.
Sylvia Earle led the first team of women
aquanauts to explore the ocean floor.
Sylvia Earle started two organizations
that focus on exploring ocean waters.