Stover's Point Preserve
Magical place to spend the day. Go when the tide is highest, and as it starts to go out, let the kids float down the tidal river from the lagoon to the bay. They will remember it forever. Don't be scared by the drive onto the beach. it is rough, but if you go slow, you'll make it.
It took five years before anyone told us about this spot - What is so cool is that you can drive directly on to the beach. If you have a low riding car like a Prius - don't go. There are also no bathrooms so keep that in mind.