Amazing microorganisms thrive at high temperatures incompatible with the familiar forms of life. A few species from hot springs or from the vicinity of hydrothermal vents at the floor of the oceans are the basis of a multimillion dollar industry. An entirely new form of animal life has been discovered around the volcanic eruptions from the sea floor. This animal life thrives in the permanently dark environment only because it harbors symbiotic bacteria that synthesize food molecules from inorganic chemicals in the emissions. Thermophilic microorganisms are involved in composting and humification in terrestrial habitats.