A bioship is a type of spacecraft or starship described in science fiction as either predominantly or totally composed of biological components, rather than being constructed from manufactured materials.
Earth, apparently, is one of the planets inhabited by creatures that are supposed to function as FTL (faster than light) drives (Pushers), and, it is stated that all the conflicts and discontent of humanity are due to the fact that, while they have matured, they have nowhere to apply their true purpose.
[1] In the 1966 short story "Jonah" ("Jonas" in French) by Gérard Klein, humanity uses massive (half a billion tons each) bioships called ubionasts (Units of Biological Navigation over Starways).
[2] Volume 322 of the German Perry Rhodan magazine series, first published in November 1967, marks another very early appearance of the bioship concept in science fiction.
The Yuuzhan Vong race in the Star Wars Legends' New Jedi Order book series use a fleet of highly resilient bioengineered vessels during their invasion of the galaxy, ranging from fighter sized "coralskippers" to titanic worldships that house their entire population.
In Jordan Peele's sci-fi horror comedy film Nope (2022), a flying saucer-shaped UFO has been plaguing the prairies of Los Angeles County, California and abducting several horses and ejecting anything inorganic, disguising itself in a single unmoving cloud and deactivating any electronics with its an electromagnetic field.
However, over time, protagonists OJ and Emerald discover that the UFO is not a ship, but an actual independent alien organism, or a unique terrestrial flying cryptid, whom they dub Jean Jacket.
Despite its resemblance to a flying saucer, Jean Jacket is not an actual ship and hosts no alien crew but instead is eating all the creatures it "abducts" and regurgitating anything like metal or wood or inorganic, including the liquefied prey if it is unable to process it.