A profile of Rachel Graham, who works for the Wildlife Conservation Society to protect sharks that are disappearing from the ocean:

“Some eco groups suggest that as many as 73 million sharks are killed globally every year. Hammerheads, blue sharks, mako sharks – they’re disappearing, and they ain’t coming back.

“Unless activists like Graham have a say. Most of Graham’s life is now spent trying to reverse the damage that has already been done. She tells me that because sharks are almost all cartilage, there are no skeletons to recover and study. Basic information about their lives still eludes scientists.

“‘We don’t even know how long they gestate – no idea,’ explains Graham. ‘We can’t save them if we don’t know where they go and how they live.’”