I don't think sharks necessarily stay in one area. They pretty much go wherever there's water. Not that I'm buying the shark theory anyway ;-)
How would anyone think they
could see sharks when it's
pitch black? Aruba doesn't
appear to have many street
lamps. Especially, around
the beaches. FOX'S Rick
Levanthal showed us how
dark it is around the
lighhouse area at night.
Also, said the lighthouse
light isn't always on.
Sharks are hunters. They're drawn to blood. Here's a differring view:
You might have one niggling question: "Great fun, but what about sharks?". Sharks are often portrayed in movies as vicious and aggressive man-eaters. In reality, however, sharks keep to themselves and the chances of getting injured by a shark are much less than the chances of being struck by lightning! It's good to learn sharks prefer to keep to themselves and don't bother you as long you don't bother them. Other dangerous fish will leave you alone if you leave them alone. Sharks are more like scavengers than predators, and it is very rare to get injured by marine animals. Accidents only happen if the animal feels it has to defend itself because it is being provoked in some way by divers. The golden rule for divers is to dive sensibly and responsibly. Some corals and sponges may be harmful but this will only be the case if you touch them. In case you accidentally touch or scrape one, your dive master can quite easily treat the sting with an ointment he will carry with him to the diving location.
http://www.visitaruba.com/attractions/sunandfun/scuba.html