game nor the schools of fish. the tons of rubber battered the healthy reef nearby. they re doing damage to the reef and they re harboring very little marine growth. reporter: shredding and recycling tires today is a booming business, but back in the 70s tire recycling didn t exist. the only options were landfills, which is what this good intention became. a used tire landfill under the sea. there s a lot of finger pointing has to who is responsible and who should be taking care of it. reporter: once back on land, the tires will be burned at a power plant incinerator to produce green energy. four long decades later, these old tires will finally do some environmental good. phil keating, fox news. former virginia governor bob