Hydrothermal vents are places where geologic activity has opened cracks on the ocean floor that produce superheated and chemical-rich water that spews upward, similar to geysers on land. Where cold, hydrocarbon-rich water escapes from the seafloor, we find "cold seeps." Despite being in areas with no light for sunlight-driven food production, both vent and seep sites support diverse communities of animals that have adapted to produce food using chemical energy, via a process known as chemosynthesis. The videos featured here highlight underwater volcanoes, hydrothermal vents, and cold seeps and the unique geology and biology found during expeditions to these sites.


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