429 Manatee Deaths in 2011 Second-Highest On Record, But None Recorded in FlaglerJanuary 4, 2012 | FlaglerLive | 2 CommentsA cold-related die-off of manatees in early 2011 set the stage for a third straight year with high numbers of deaths for manatees, following a record 766 deaths in 2010 and 429 in 2009.