These are all concentrated in a small area, creating one of the most unique ecosystems in the world. (philippinestravelpackage.com)
Devoid of light but likely bursting with supersaturated oxygen and other gases, Vostok has long been speculated to be a potential habitat for unique ecosystems of extremophilic microbial life (and who knows what else). (scientificamerican.com)
A tour here is a magical experience where you will get the chance to discover five of Costa Rica's unique ecosystems with a local bilingual naturalist guide. (bluesurfsanctuary.com)