It starts with the DNA of unknown organisms and then tries to figure out what the organisms are.

Red krill had appeared and an unknown organism had built numerous nests across the seabed from black pebbles.

Parker made a postmortem examination and discovered that most of the victim's brain had been destroyed by an unknown organism.

It has been the basis of many science fiction stories: the rocket returning from Mars carries an unknown organism destined to cause havoc on Earth.

"Too many unknowns in allowing unknown organisms to propagate in human environments, with totally unknown effects."

These organisms, unknown at the time, were subsequently identified as B. dendrobatidis.

But he noted that the revelation of the animal's unexpected features "demonstrates just how precarious reconstructions of unknown organisms may be."

Maybe the Bumbler had suddenly decided to complain about Oar again: unknown organism, help, help.

There is an unknown organism in your systems.

"I've officially requested that my team be notified when unknown organisms have been detected," she informed him immediately.