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This page contains information regarding Star Trek: Lower Decks, and thus may contain spoilers.

The following is a list of unidentified non-humanoid species observed in the 24th century.

Alien lifeform

An alien creature

An alien lifeform was seen on a viewscreen depicting data from the USS Enterprise-D's library computer. (TNG: "The Last Outpost", "Datalore")

Ba'ku animals

Dansk giant centipede

In 2381, Ensign Bradward Boimler was slated to go on a mission to Dansk, where he would attempt to "wrangle" giant centipedes while he was armed with a phaser rifle. However, Ensign Beckett Mariner ultimately got Boimler reassigned to accompany her to the Daystrom Institute, as she believed he was not ready to handle giant centipedes, which had poisonous pincers and mandibles. (LD: "Where Pleasant Fountains Lie")

This species was only mentioned in dialogue.

Dark matter nebula planet animal

On the coastal regions of this planet, cries of this unseen animal could be heard in the background. (DS9: "Rocks and Shoals")

Many scenes of this episode were shot outdoors in the Sun Valley region near Los Angeles. The noises that could be heard in the audio were actually seagulls.

Desert planet creatures

Burrowing crab

A burrowing crab

While stranded on a desert planet in 2381, Ensign Bradward Boimler encountered crab-like creatures who could quickly burrow through the sand on the planet's surface. A group of these creatures attempted to carry off AGIMUS, but they were quickly stopped by Boimler, who kicked a few of them away, causing the rest to scatter. (LD: "Where Pleasant Fountains Lie")

Ravenous animal

A ravenous animal

While stranded on a desert planet in 2381, Ensigns Bradward Boimler and Beckett Mariner were charged by a large animal whose body was impervious to phaser fire. Mariner and Boimler were able to shelter themselves from the creature inside the shuttlecraft Yosemite, though it devoured their emergency rations. (LD: "Where Pleasant Fountains Lie")

Ferenginar creatures

Two statues depicting animals could be seen in Ishka's home on Ferenginar. (DS9: "Family Business")

Footprint and cell sample aliens

Footprints and corresponding cell samples of several species were stored in the library computer of the Enterprise-D. Samples of at least five alien species were compared to the footprints and cell sample of the Tarchannen III species prior to its discovery. None of the samples was similar to the Tarchannen III lifeform however. (TNG: "Identity Crisis")

Footprint and cell samples
Footprint sample 1.jpgFootprint sample 2.jpgFootprint sample 3.jpgFootprint sample 4.jpgFootprint sample 5.jpg

Goralis III animals

A wolf-like animal from the Goralis system

While stranded on Goralis III in 2375, Worf killed a large furry mammal, somewhat similar to a wolf, for food. Worf also mentioned the planet having predators that might pose a threat to him. (DS9: "Penumbra")

Horned creature

A horned creature

The stylized image of a possibly reptilian or saurian creature with a unicorn-like horn could be seen on an Alpha Quadrant terrorist communicator and as a badge in use by two Delta Quadrant species, the Mari and the Ledosians. (TNG: "Starship Mine"; VOY: "Random Thoughts", "Natural Law")

Hysperian dragon

The planet Hysperia was home to creatures resembling dragons from Earth mythology, which some Hysperians kept as pets. One such creature was also present on Queen Paolana's cruiser, the Monaveen (LD: "Where Pleasant Fountains Lie")

This species was only depicted via graphics on a viewscreen and an MSD.

Larval space creature

A larval space creature

At some point in time, this larval spaceborne species was encountered by the USS Cerritos, and attached itself to the end of the ship's port nacelle. (Star Trek: Lower Decks opening credits)

Moon creature

A Delta Quadrant Mikhal Traveler claimed to have landed on a moon only to have discovered (after sustained moonquakes) that it was actually a creature, a living being so massive it generated its own gravitational field and so immense that it supported its own ecosystem. Another traveler, who had visited the system in 2373, expressed skepticism, as his sensors had not picked up anything like that. (VOY: "Darkling")

New Earth primate

The New Earth primate was an intelligent - but non-sentient - primate species native to the planet called "New Earth."

Kathryn Janeway attempted to communicate with the primate during her brief stay on the planet in 2372, claiming she sensed intelligence in it. However, Chakotay doubted it could be domesticated. (VOY: "Resolutions")

Alan Sims was responsible for casting this primate. When the script called for an alien primate, Sims found a spider monkey which, on command, could walk on its hind legs with its tail erect. "At first Rick Berman just laughed. He couldn't believe that a spider monkey – which you could find in any zoo – would look convincingly alien. But when I showed him photographs of what the monkey could do, he said, 'That looks alien enough to me. Book him!'" (Star Trek 30 Years, p. 46)

Non-corporeal species

Rigel IV aliens

Aliens encountered on Rigel IV

These aliens, encountered on Rigel IV, were displayed on viewscreens depicting data from the Enterprise-D library computer. (TNG: "The Last Outpost", "Datalore")

These drawings are from the Spaceflight Chronology. In the book, these images are presented as drawings of aliens encountered by the first Humans to visit Rigel IV. Only the encounter with the creature on the left was given by the captain in his log. He found the creature somewhat reminiscent of a porcupine. Its tentacles were waving in the air in anger, as a Rigellian jeweler was refusing to sell a large diamond to the creature for the amount it was offering for the jewel

Ruah IV species

Several animal species lived on the landmass of the planet Ruah IV as of 2369. (TNG: "The Chase")

Slug-like creature

While performing anomaly consolidation duty aboard the Cerritos in 2381, Ensign D'Vana Tendi accidentally knocked over a storage canister, releasing a large, gelatinous slug-like creature which promptly devoured her. Although Ensigns Beckett Mariner and Samanthan Rutherford managed to save their crew member and shrink the creature with a hypospray injection, Tendi was still quite traumatized from the ordeal. (LD: "The Spy Humongous")

Slug-o-Cola slug

The labels on Slug-o-Cola bottles featured an image of an apparently man-sized, slug-like tentacled creature, gorging on the cola. (DS9: "Profit and Lace")

Soukara lizard

An iguana from the planet Soukara

The Soukaran iguana was a type of lizard native to the jungles of the planet Soukara. (DS9: "Change of Heart")

Soukara mating creatures

These two creatures made mating calls to each other as Jadzia Dax and Worf traversed the jungles of Soukara in 2374. Upon hearing them howl together after calling and responding, Dax mused, "Another happy couple." (DS9: "Change of Heart")

These creatures were only heard off-screen.

Trophy skulls

Several skulls, which appeared non-humanoid, were in evidence on a Hirogen trophy wall in 2374. (VOY: "Hunters")

A large skull was hanging in a net aboard a Hirogen ship in 2374. It was from a lifeform which was previously hunted down by the Hirogen. (VOY: "Prey")

The Waters marine life

A massive eel-like aquatic creature attacks the Delta Flyer at the center of The Waters.

This marine lifeform was encountered under the surface of "The Waters" at a depth near 600 kilometers. The creature, which was likened to the electric eel found on Earth, was significantly larger and more powerful that the Earth counterpart, as it emitted biothermic discharges that exceeded 500,000 volts. (VOY: "Thirty Days")