The problem with setting a threshold or limit is the need for oversight, monitoring and determining where the line is. This is a great place to chat about great dive experiences. For me, great dives include seeing sharks. Shark talk always amps up the post-dive chatter! So, here goes...Imaging Foundation is on our side - they want to protect sharks in our global watery playgound. Im not out to make an arguement and hope I have not offended anyone in our virtual dive community, just wanted to consider this other angle. Thx