One day a week, currently Tuesday, come aboard the Unicorn, a replica of a 19th century sailing vessel, for a family pirate outing. Kids get into the part by purchasing ($6) the requisite bandana, eye patch and sword. You’ll then sail to Sulphur Springs for the volcano tour and visit a waterfall and gardens. Take part in a family treasure hunt, and walk the plank, or swing — via ropes — into the sea for a swim. The Unicorn appeared in “Pirates of the Caribbean,” as well as “Roots.”