Thanks Greg for this post, it can’t be said often enough...DO NOT FEAR SHARKS...i dived often with sharks and i ve never seen an aggressive one, only curious and if they become to curious it helps to wave your hand to tease his gills with a gush of water...it allways helps...sharks are wonderfull creatures and i would bet everything i own...without food in the water its nearly impossible for a diver to made a shark bite him...for swimmers or surfers, who might be taken for a seal, i think there is a potential threat...but even this is nearly impossible.