Ka cika wannan jumlar: Hukumar Kula da Kifi da Dabbobi ta Amirka ta cire gaggafa daga cikin jinsunan da suke cikin haɗari a ranar 12 ga Yuli, 1995, sa'ad da aka canja sunanta daga "mai haɗari" zuwa "mai haɗari". A ranar 6 ga Yuli, 1999, an gabatar da wani shiri "Don Cire Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon Gwargwadon". An cire shi daga jerin a ranar 28 ga Yuni, 2007. An kuma sanya shi matakin haɗari na ƙaramar damuwa a cikin Jerin Ruwa na IUCN. A cikin
"Exxon Valdez" mai zubar da man fetur na 1989 kimanin mutane 247 ne suka mutu a Yarima William Sound, kodayake mazaunan yankin sun dawo zuwa matakinsa kafin zubar da ruwa a shekarar 1995. A wasu wurare, yawan mutanen ya ƙaru sosai har gaggafa ta zama bala'i.