Hike #43: 52 Hike Challenge: Maritime Hammock Sanctuary, Melbourne Beach. On a rather cold, dreary and wet morning, we headed north from Disney’s Vero Beach Resort past Sebastian Inlet State Park toward the 150-acre Maritime Hammock Sanctuary in Melbourne Beach. Fortunately, when we arrived at the Sanctuary, the rain had somewhat tapered off and we had a nice (but sometimes slippery) hike. The Maritime Hammock Sanctuary, which is located inside the 900-acre Archie Carr National Wildlife Refuge, once served as the site of an exotic plant nursery. Distance: 2.8 miles.