Season 1 Discovery , 2006 Watch now Season 2 Discovery , 2006 Watch now Season 3 Discovery , 2007 Watch now Season 4 Discovery , 2007 Watch now Season 5 Discovery , 2008 Watch now Season 6 Discovery , 2009 Watch now Season 7 Discovery , 2010 Watch now Season 8 Discovery , 2011 - 2012 Watch now Season 9 Discovery , 2012 Watch now Season 10 Discovery , 2013 - 2014 Watch now Season 11 Discovery , 2014 Watch now Season 12 Discovery , 2015 Watch now Season 13 Discovery , 2015 Watch now Season 14 Discovery , 2018 Watch now Season 15 Discovery , 2019 Watch now Season 16 Discovery , 2020 Watch now