History:
Spaceborne life-form native to the Delta-Quadrant. The swarm was a colony of about 2000 individuals that propelled themselves at speeds in excess of 3000 kilometers per second by means of flagellation. These creatures absorbed nutrients directly from space through their porous outer skin. One of the life-form's sexes was very large in relation to the opposite sex, comparable in size to a Federation starship.
VOY "Elogium" ; Star Trek Encyclopedia II
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