Another thought I just had ... I remember maybe three years ago seeing a device called a "Shark Shield" being advertised, and I did a little research then and there were few similar devices on the market. It was an electronic transmitter that put out a frequency or something that the sharks didn't like. It only projected like maybe six feet away from the wearer, so you would still get to see lots of sharks ... but I remember seeing one video where a diver wearing one was positioned under the carcass of a cow on a hook and sharks were swooping in for a bite but each time they would veer off when they got within a few feet.
Yeh, here it is, check out http://www.sharkshield.com
