Deadliest Catch: Bloodline (sometimes shortened to Bloodline) is an American documentary and reality television series that premiered on April 14, 2020, on the Discovery Channel. Bloodline is a spin-off of Discovery Channel's Deadliest Catch. In contrast to the program's usual setting in the Bering Sea during crab fishing season, Bloodline is set in Hawaii. The show's three-seasons follow fishermen Josh Harris, his business partner Casey McManus (both captains of the Cornelia Marie on the Deadliest Catch series), and Jeff Silva as they investigate scribbles and notes found on Hawaiian fishing charts left by Josh's late father, Phil Harris. Bloodline was launched the same day as the season 16 premiere episode of Deadliest Catch. Discovery cancelled the series and removed all episodes from its Discovery+ streaming service in September 2022 after renewed attention was brought to a 1999 sexual assault case involving Harris.