My recommendation: first go and find the diveshop at the park , they have a map about the area and they can give you more infos, where to go, what to see, dos and donts.
Right off the beach swim area..
At the water's edge.
Under the bridge
Under the bridge. Make sure it's about an hour before high tide, slack. Have fun!
Park on the left. The swim/snorkle area is just pass the bridge - walk through the sand under the bridge.
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