Hosted by actor and comedian Rob Riggle, “Shark After Dark” is Discovery Channel’s first ever live companion talk series dedicated to Shark Week. In each nightly episode, Riggle will lead viewers through an hour-long celebration of all things shark-related that will include celebrity guests, shark experts and shark attack survivors, among others. The show will give viewers the first opportunity to interact live on-air every night with tweet messages, questions to the shark experts and more.