Complex sentence: Snottites are colonies of single-celled extremophilic bacteria that hang from the walls and ceilings of caves (similar to small stalactites, but with the consistency of "snot", or mucous).
Split into simpler sentences: Snottites are colonies of single-celled extremophilic bacteria. They hang from the walls and ceilings of caves and are (similar to small stalactites, but have the consistency of "snot", or mucous).