There are has been a lot of attention this season on the coast about shark attacks. As a wazer, I have my phone with me when I'm on the beach. I think it could be useful if waze could be utilized on the coasts to tag that a shark has been seen in an area, much like we are able to do now with hazards and things. This could be a first alert type of system that could send notifications to other wazers in the area.