just an fyi:
the coral reef areas around eilat are actually cordoned off w/ropes to provide 'designated lanes' for 'snorkeler/diver traffic'
fines there are very strictly enforced, and the nature reserve authority has quite a bit of clout there(and in israel in general-the 'Society for the Protection of Nature' has been very active over there for many years
it has done absolutlely nothing to prevent the decline of any of the reef areas on Eilat's shores, though
i've been there in '71, '76, and on and off from 82-95-i'd guess that the overall life there has disappeared by at least 60% over that time.
the pollution from the city, and tourists, has been effective enough to not even have the 'coral touching' be a big enough issue
i cannot say if such is the case elsewhere, though