francisco bay, red rock island.ant rock that sits a stone's throw away from the richmond san rafael bridge. a place most people in the bay area know of but know little to nothing about. just ask captain armando flores of north bay charters and marine services who makes his living taking people out on the water. >> almost every weekend. it's a good spot. a lot of fish in the area here. good striper fishing. sightseeing. i bring people, you know, to take pictures for weddings. people always ask, who's the owner of this place? >> reporter: aside from the birds, limb says the 5.8-acre island does actually belong to a family and has served as somewhat of a family heirloom for decades. >> the island was acquired by my clients many, many years ago through a bet. and so it was a gem dealer who had moved to bangkok and a real estate attorney who had this bet that whoever lived the longest would actually acquire the island. >> reporter: nobody actually lives on red rock island, and legend has it nobody has since the 1850s, lo