Black Lagoon was an anime series that ran from 2006 to 2011. In total 29 episodes of Black Lagoon were aired. Black Lagoon has no reported filler. The Black Lagoon, a boat commanded by a bunch of mercenaries, transports goods around the Southeast Asian seas. A Japanese businessman gets kidnapped by one of the mercenaries for ransom money, but he somehow ends up staying with the crew and joins the many thrills and dangers.