( VOY: ' Scorpion', ' Scorpion, Part II', ' Prey'). Species 8472 withdrew to their realm, soon after, in fear of the new weapon. Armed with bio-molecular warheads which contained modified nanoprobes developed by The Doctor, Voyager destroyed a number of Species 8472 bio-ships in fluidic and normal space. Upon realizing this, Captain Kathryn Janeway decided to ally with the Borg to stop Species 8472, while also ensuring safe passage through Borg space. The Federation starship USS Voyager encountered Species 8472 around this time, during which a member of the species telepathically communicated their genocidal intentions to Kes. With their superior biological technology, Species 8472 drove the Borg back and launched a counter-invasion of the galaxy, annihilating large numbers of Borg drones, ships and even planets. However, Species 8472 proved immune to assimilation and the invasion of their realm provoked a war according to Seven of Nine, Species 8472 was the first species to offer 'true resistance to the Borg' in their long history. The Borg encountered Species 8472 in 2373, after finding their way into fluidic space to search for more species worthy of assimilation. History War with the Borg Main article: Borg-Species 8472 War
