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- UmzumbeUmzumbe is a seaside resort situated at the mouth of the Mzumbe River (bad kraal) in KwaZu
- UraraneidaUraraneida is an extinct order of Paleozoic arachnids related to modern spiders. Two gener
- Urban wildlifeWildlife that can live or thrive in urban environments
- UrolophidaeThe Urolophidae are a family of rays in the order Myliobatiformes, commonly known as sting
- UrsoideaUrsoidea is a superfamily of arctoid carnivoran mammals that includes the families Subpari
- Ursus maritimus tyrannusUrsus maritimus tyrannus (lit. 'tyrant maritime bear') is a controversial extinct subspeci
- USFS AukletUSFS Auklet was an American fishery patrol vessel that served in the waters of Southeast A