Well, I should hope so!
There have been 8 shark attacks on people this year in North Carolina waters and I heard today a porpoise washed ashore that had been bitten by a shark and died.
Below is a link to a website that tracks sharks with a radio transmitter of some sort. When the sharks' fin, with the "pinger" attached breaks the surface, it registers with a satellite and you can track the shark.
Here is the link to Katherine
http://www.ocearch.org/profile/katharine/It tells about her, age, weight (2300 pounds), length (14 ft 2 in), and some other stuff.
If you zoom in on the map, her most "inland" ping, on January 10, 2015, is about 18.5 miles (as the crow flies) from where I live now. Pretty cool, I think.
Veronica-Pooh Nash Poleate has some good safety advice for avoiding a shark attack.
https://www.youtube.com/watch?v=9OZxzmNy3nc