Friday night's back-to-back shark attacks that injured one woman in Florida's Panhandle were likely due to a high population of fish near the coastline, Dr. Catherine Macdonald explained. #sharkattack #florida #panhandle "NewsNation Now" is a no fluff, no filler newscast hosted by Nichole Berlie and Connell McShane featuring up-to-the-minute news drawing from a network of journalists across the U.S. Weekdays starting at 1p/12C. NewsNation is your source for fact-based, unbiased news for all America. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij