So last fall I had chance to go to Honolulu Hawaii and while I was there I basically did everything I could in the water and with the wild life. So I found this shark tank I could Go into and it was full of white tip black tip reef sharks and a hammer head shark 
It was so crazy they got so close one was a couple cm from touching my leg. I've never been so scared and excited in my life. If your in Hawaii I suggest doing a shark excursion and getting up close and personal with this beautiful creatures 