By Mark Frost, Chronicle Editor
David Shiffman has a photo of himself as a boy floating on an inflatable shark.
“I feel like most little kids go through a shark or a dinosaur thing at some point,” he told The Chronicle Monday. “And I just never grew out of it.”
A marine conservation biologist, Dr. Shiffman, 38, has a new hot-selling book, Why Sharks Matter: A Deep Dive with the …
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