 Goldberg warned of pollution's risk to all ocean life at the 1969 American Geophysical Union conference.Later, in the 1970s, Goldberg began the EPA-funded Mussel Watch program, which measured ocean pollution by its effects on shellfish.His studies led him to push for a ban on tributyltin, a chemical that was used in ship paint for its toxic effects on barnacles but that was poisoning the mussels in San Diego Bay.