they're tracking and tagging tiger sharks. does not mean it is a tiger shark involved. in every one of these attacks. they're just seeing an increase of tiger sharks around the island. they want to keep track of them. also, those tiger sharks can travel 100 miles in one day. >> they can swim in shallow water. which is also -- they're really big. and swim in shallow walter. >> where we usually are. >> i refuse to give into it. i'm going to the beach. >> going to the beach no matter what. the summer is over. almost have to go to hawaii to go to the beach. >> if i see a fin i'm running. coming up next, the five-time, summer reading champion at his local library. >> the library director says he should step aside. because he is hogging a contest. should she? should he, rather? the debate right after this. >> announcer: "world news now" continues after this from ou