A couple years ago I was In Boca Grande Fl....Where I was staying at was 26 miles from Boca Grande Pass by water (30-35 min trip in decent conditions on my ski)....I took 2 trips to the Pass for some Tarpon fishing on my Waverunner...First trip went great ...even caught @ 40 lb Tarpon....Second trip a couple days later I went to the Pass mid morning....glass smooth on the way out but the wind came up (checked the weather, wasnt supposed to blow as hard as it did), when I went to head back as the wind was blowing pretty decent, I came around a barrier point....that was blocking a lot of the wind, I came around and I was faced with 3-4ft seas with 5-6ft rogue rollers thrown in for fun ()....I came across an area that was some what shallow and clear where you could see the sandy bottom...as I went across it I saw 2 BIG dark shadows heading my way,they went right under my ski ....felt a thud on the bottom as they went by....scared the crap out of me...took almost 2 hours to make it back to the ramp because of the water state, about 30 mins after dark....was told that Bull Sharks are every where in that area.....