icon-close icon-dropdown-arrow icon-edit icon-google-play icon-ios icon-key icon-live-tv icon-my-videos icon-navigation-arrow icon-preview-with-circle icon-preview icon-search icon-showinfo icon-showlistings-player icon-watchlist-add Layer 1 icon-watchlist-remove

SIGN IN WITH YOUR TV PROVIDER

You’re just a few clicks away from the show you want to watch. Please sign in with your TV provider to watch this episode and other great programs.
Now Playing
Shark Week

Great Hammerhead Invasion

Season 29 Episode 6
Early November, pregnant giant hammerheads arrive off Bimini, in the Bahamas and Shark Week's Dr. Tristan Guttridge wants to know why? And he and his team even perform the world's first ever ultrasound on hammerheads to find the answers.
  • 42 min
  • TV-PG
  • Premiered 07/23/2017