Read this before you dip your toes or go surfing on the Shore this weekend

Non-profit research group OCEARCH has been tracking a 16-foot, 3,500-pound great white shark they have named Mary Lee since tagging her in September 2012 in Cape Cod, Mass., according to the group's website. Each Time Mary brings her dorsal fin above water it 'pings' a satellite allowing OCEARCH to track Mary's whereabouts. Here is an image of an enlarged tracking map, one you can follow yourself by clicking here.

Truly amazing stuff. Again, be careful about going in the water until you check Mary Lee's website.