I second Mushroom Forest ! You may also want to consider getting your AOW, so my second recommendation (Superior Producer) will be within your reach.
Perhaps I'm spoiled diving in NJ and other places with "real" wrecks...
But to me, if Mushroom Forest and Watmula are "Must Do" dives, then the Superior Producer is surely a "Can Miss" dive.
It's not as much a wreck as it is merely a boat on the bottom of the ocean. Additionally, it's not a particularly interesting boat from a maritime/nautical perspective, it bears no historic significance, nor is there anything specifically remarkable or terribly interesting about the circumstances surrounding its sinking.
The currents at that site can be significant, and even if YOU can handle the current typically whatever group you're diving with is mostly comprised of people who can't. Last time I did the Superior Producer we drifted on to it in a fair current, but no-one understood how duck in behind wreck to shelter from the current and everyone else got blown all over the place and had to swim like mad to stay on it. We were on the wreck for all of about 3min when the once-a-year-vacation-divers all started signally "half-tank" and the DM signaled it was time to drift off. I looked at the wreck, then at my computer showing 2600psi, back at the wreck, and drifted off behind the DM...
The only interesting thing about the Superior Producer is that it has some nice growth on it, becoming part of the reef ecosystem. However, all the same stuff you'll find on the Superior Producer is available at any and every other dive site in Curacao. If you've never seen a boat on the bottom of the ocean with marine-life growing on it, by all means help yourself. If however you don't get the chance to do this dive when in Curacao, you haven't missed much.
