A good resource for anyone concerned about shark activity in Hawaii or around the Andaz:

http://www.hawaiisharks.com/incidents.html

A couple of things to bear in mind:

(1) The risk of sustaining a shark bite are extremely low
(2) Most bites occur in turbid/muddy water or to surfers (mistaken identity)
(3) Most incidents are a single bite rather than an attack. Expert consensus is that the shark abandons the encounter after discovering that the human is not the prey item they originally thought
(4) Unfortunately, a single shark bite can still be quite serious and (rarely) fatal
(5) Although the global risk of sustaining a shark bite are incredibly low, the risk in Hawaii is higher than the global average. There is no reason to fear sharks while on vacation but it is worth taking basic safety precautions such as avoiding swimming/surfing/snorkeling in turbid conditions

SG