The phrase "are found nowhere" is grammatically correct and can be used in written English.
Example: The rare species of orchid are found nowhere else in the world except for this small, remote island.
A quarter of the reserve's species are found nowhere else.
Only c. 31 verses of Mark are found nowhere in Matthew or Luke.
It is home to thousands of species of plants and animals that are found nowhere else.
It is habitat for species that are found nowhere else on earth.
There are 223 species on the massif which are found nowhere else in Britain.
Even more intriguing than the tepuis' long isolation is that many species living atop them are found nowhere else.
* Most of the sensationalized media accounts of Shapiro's claims are found nowhere in the Notice of Allegations.
Many of the species that live on top of the tepuis are found nowhere else on the planet.
In this region, 64% of fish species are found nowhere else on Earth, according to the IUCN.
Western Australia has half of the nation's 25,000 plant species and most of those are found nowhere else on Earth.
The mountainous area around Santa Marta, on Colombia's Caribbean coast, is a biological hotspot of sorts, filled with bird species that are found nowhere else.
