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[[Image:HiveFleetsMap.jpg|thumb|right|350px|Hive Fleet incursions on the [[Galaxy]] ]]
'''Hive Fleets''' are massive locust-like [[Tyranid]] swarms, comprising billions of creatures including the actual [[bio-ships]], living spacecraft used to cross interstellar space and the voids between [[galaxy|galaxies]]. Each creature of the Hive Fleet is an inseparable part of the [[Hive Mind]].

== Overview ==
An entire Hive Fleet is directed by the single coordinating will which is its [[Hive Mind]], formed from untold billions of individual consciousnesses, each of which is a living creature in the fleet. Mankind still searches vainly for the higher beings they suppose control the Hive Fleets, and though such mighty creatures exist, they no more control the Hive Mind than single brain cells control a man's body. It is the sum of the Hive Mind which motivates it, not its constituent parts.

Three major Hive Fleets have invaded the galaxy, each coming into conflict with the [[Imperium]]. Of the three major Hive Fleet invasions, two entered the galaxy through the [[Eastern Fringe]], but one is moving up from below the galactic plane. The Hive Fleets encountered thus far are just a splinter of the main Tyranid invasion force that is traveling through the void between galaxies.{{Fn|1}}

The bio-ships contain everything required to sustain the fleet; some ships being purely for crushing resistance, the larger ships contain birthing pools to create the huge land armies of the Tyranids and even more ships when the need arises. The nutrients used as food and raw material are replenished by scouring conquered planets of every cell of biological matter, including all the Tyranids it seeded onto the planet. Because the Tyranid forces are recycled in this way, the "design" of the Tyranid warriors can be altered by genetic engineering, allowing the Tyranid forces to rapidly adapt to overcome any enemy. Further, the Tyranids absorb the DNA of defeated enemies, allowing for further genetic diversity.{{Fn|2a}} It is believed the [[Genestealer]] and [[Broodlord]] are derived from [[Human]] DNA, the [[Zoanthrope]] from [[Eldar]] and the [[Biovore]] from [[Ork]] DNA.{{Fn|2b}}

By the adaptive nature of the Hive Fleets, fierce resistance on a planet will only make the fleet stronger in the end; for this reason only a few tactics have been found to work. The first is to draw the Tyranids into a large ground battle, forcing the fleet to deploy as large a ground force as possible. Once this is achieved, the planet is evacuated, following with [[Exterminatus]] as the Tyranids strip the life of the planet. This tactic is effective as Hive Fleets are dependent on the impetus gained from absorbing each conquered planet; the Hive Fleet will also have lost the biological "energy" expended to conquer it, including all of the bio-material of the ground forces and by the nature of Exterminatus will not be able to recover any from the planet. This tactic is extreme and also damaging to the Imperium, as it destroys a valuable and habitable planet every time. It has been projected that there may not even be enough habitable planets in the galaxy to stop the Tyranid threat, especially if more Tyranid fleets arrive from outside the galaxy.

===Splinter Fleets===
One of the most insidious aspects of the Tyranids is the difficulty in eradicating a Hive Fleet. Should a fleet become decisively defeated, some portion of its strength will invariably escape and slowly build up its strength by quietly consuming more biomass. It may take years or even centuries, but these '''Splinter Fleets'''' will rise again to pose a threat. Moreover, such Splinter Fleets will have learned the lesson of their primogenitors defeat and have adapted accordingly.{{Fn|3}}

While [[Hive Fleet Leviathan]] is currently the largest and most ascendent known Tyranid Hive Fleet, Splinter Fleets of [[Hive Fleet Behemoth|Behemoth]] and [[Hive Fleet Kraken|Kraken]] continue to plague the [[galaxy]].{{Fn|3}}

<gallery mode="packed" heights="150">
File:Kadaku Orbit.jpg|Day 4 of [[Leviathan]] splinter fleet's invasion of [[Kadaku]] in the [[Recidious System]].{{Fn|5}}
File:Hive fleet (The Tithes ep 2).jpg|Oncoming Tyranid fleet heading towards [[Ystrad]].{{Fn|4}}
</gallery>

==See also==
*[[List of Hive Fleets]]
*[[Forgotten Hive Fleet]]
*[[Behemoth]]
*[[Kraken]]
*[[Leviathan]]
*[[Bio-ships]]

==Sources==
{{cite}}
*{{Endn|1}}: [[Warhammer 40,000 5th Edition Rulebook]], pg. 215
*2: [[Codex: Tyranids (3rd Edition)]]
**{{Endn|2a}}: ''Creating Your own Hive Fleet'', pg. 36
**{{Endn|2b}}: ''Species 457 Structure & Analysis'', pg. 37
*{{Endn|3}}: [[Codex: Tyranids (10th Edition)]], pg. 12-14
*{{Endn|4}}: [[The Tithes (Animated Series)]]: Episode 2: Harvest
*{{Endn|5}}: [[Warhammer 40,000: Space Marine 2]] - Prologue cutscene


===Uncited===
*[[Codex: Tyranids (4th Edition)]]
*[[White Dwarf 145]] (1992), Tyranid army list

[[Category:Hive Fleets| ]]
[[Category:Tyranids]]

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