Shark attacks: Beachgoers nervous, scientists stumped

Multiple shark attacks reported across U.S.

Kayaker catches shark attack on video

Tiger Shark Attacks Kayaker Off Hawaii Coast

Shark attacks kayaker in Hawaii

Mysterious deep-sea shark that's older than the dinosaurs captured on film

Shark Week: The Podcast - Lights! Camera! TEETH! Making Shark Docs

Shark Season: Shark Season: Official Clip - Killing the Shark