Hive Fleet

A Hive Fleet is a large armada of living, biological starships created by the Tyranids for the purpose of gathering the raw materials and biomass necessary for the reproduction and expansion of their species. A Hive Fleet is used to attack and strip star systems of their biomass using the full range of Tyranid bioforms. Only three primary Tyranid Hive Fleets and a host of smaller splinter fleets have ever come into direct contact with the Imperium of Man, but they have all brought devastating damage and loss of life. The Imperium's Segmentum Ultima Command designated them as: Hive Fleet Behemoth, Hive Fleet Kraken and Hive Fleet Leviathan, and they each made first contact with Imperial space in the Eastern Fringes of the galaxy, in the Segmentum Ultima.