Telepathic pitcher plant " Telepathic pitcher plant " was a name given to the largest bioplasmic organism known , encountered by the in 2375 . The name was given by Naomi Wildman , based on her recent biology lessons about Earth plant life . It was a space - dwelling lifeform , approximately 2000 km wide , that preyed on starship s . The Doctor ' s scans estimated that the creature was at least 200 , 000 years old . It fed by generating a powerful neurogenic field extending several million kilometers . When a ship entered the field , it caused the crew to begin experiencing delusions of what they most wanted , with the organism appearing as the desired thing . For example , a crew seeking a planet to settle on might see an uninhabited world that perfectly met their needs . Thus the crew would set a course straight to it . Although scans showed no signs of sentient thought , suggesting that the creature operated on highly evolved instinct , the creature also showed signs of great intelligence and cunning ; not only would the field influence the minds of the crew to accept the illusion , it falsified the ship ' s sensor readings to support the illusion . However , should one or more crew members not share the particular desire on which the illusion was based , they would be unaffected , and as the ship approached the creature , would become aware of the danger and alter course away . But , in such a case , the creature would manipulate the crew into restraining those members , keeping them from interfering . When the ship got to the creature , the neurogenic field would be strong enough to render the crew unconscious , their minds firmly trapped in the illusion ; even if they were revived by external stimulus , they would remain trapped in the illusion , unable to acknowledge the reality of their situation . The ship would enter the creature ' s maw and pass into its digestive chamber , where lightning - like bioplasmic discharges from the walls of the chamber would cause the hull to slowly degenerate on a molecular level . The molecules would be absorbed as nutrients . Eventually the ship , and everything and everyone on it , would be broken down and digested . In 2336 it consumed the " Nokaro " , a colony ship containing the friends and family of Qatai . Qatai dedicated his entire life to destroying the creature , and gradually became largely immune to its telepathic manipulation , although he was still sometimes susceptible to it . In 2375 it attempted to consume the USS " Voyager " . It lured them by creating the illusion that the creature was a wormhole to the Alpha Quadrant . However , three of those on board were not affected . These were Seven of Nine , who was reluctant to return to Earth out of apprehension as to how she would be greeted , Naomi Wildman , who had been born on " Voyager " and saw the ship as her home , and The Doctor because of his holographic nature . Despite their attempts to warn the rest of the crew of the danger , the creature was able to convince " Voyager " to take The Doctor offline and knock Seven out by faking transmissions that claimed the wormhole would disrupt The Doctor ' s holomatrix and Seven ' s neural transceiver might alert the Borg to the wormholes existence as they passed through a subspace layer they were monitoring . ( Naomi ' s youth meant that she was relatively ignored by the others ) . Having regained consciousness inside the creature and recruiting the aid of the currently - trapped Qatai , the three were able to emit bursts of antimatter gas from " Voyager " s warp core through ships nacelle s . This was then detonated by Qatai ' s tetryon - based weapon s , producing an electrolytic reaction and making the two ships taste undesirable to the organism . This forced the creature to ' spit ' " Voyager " and Qatai ' s ship out . The crew , which had fallen unconscious under the creature ' s neurogenic sway , subsequently regained consciousness and the situation was explained to them by Seven , The Doctor and Naomi . " Voyager " later placed a number of beacons to warn other ships of the organism , while Qatai continued his ' quest ' to destroy the creature . ( )