A sea cow pokes its snout above the surface as is traverses the waters along the 1.5-mile jetty that juts from Black Point Marina to Biscayne Bay. Manatees are just one of the wondrous sights to encounter at the county-owned dock and park where couples and families spread blankets on the grassy hill overlooking the boat ramps. From their elevated green perch, onlookers have front-row seats to herons diving for fish and alcohol-lubed mariners struggling to get their vessels out of the water. Regulars are the dock ghouls who fiend over the sight of a papi chulo — the guy who thought he was impressing his date with his fancy boat but is now lashing out at her because he can't get the darn thing on the trailer. Ideally located near Biscayne National Park, Black Point is open from dusk till dawn.