After the show is the after-show -- TV networks look to capi­tal­ize on biggest hits

The closing credits of a Discovery Channel Shark Week special barely end before "Shark After Dark Live" fills the screen. Host Josh Wolf sits in the fish tank-themed studio and banters with guests on a couch about what type of shark is most terrifying. Taryn Southern, the show's "social media goddess," sits at a desk and scrolls through a laptop and an iPad simultaneously.