With the advancements in POV cameras it is now possible to get amazing shots underwater. Check out these photos of how to attach a GoPro to a fishing net from Pro Staff Members Broken Pine Outdoors
To get this set up you will need:
GoPro HD HERO 3+ Black
GoPro Handlebar/Seatpost Clamp
TIP: Add some rubber in between the handlebar clamp and the net.
Also, add the Floaty Backdoor for the GoPro in case it falls off so that it will float!