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Escanaba Trough Expedition: Biological Communities

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Detailed Description

The familiar saying “good things come in small packages” holds especially true for deep-sea biological communities at hydrothermal vents, including those at Escanaba Trough, a seafloor spreading center located almost 200 miles off the northern California coast. 

In these deep, dark environments, where energy comes not from the sun but from hydrothermal chemicals, microbes form the base of a chemosynthetic food web. 

Microbes convert hydrothermal chemicals into energy. They form a symbiotic relationship with creatures such as tubeworms and clams, dwelling in their tissue and providing food for them in exchange for a place to live. 

USGS scientists want to understand how deep-sea communities change over the life cycle of hydrothermal systems, as active venting sites cool down or stop flowing, turning to inactive sulfide mounds and eventually becoming background, deep-sea environments. 

By both revisiting historic sites and investigating new ones at Escanaba Trough, scientists seek to understand how these communities change over space and time, linking those patterns to the underlying hydrothermal environment. 

Listen to audio-described version.




Video is Public Domain. Music: "Life Beneath the Sea" by Calm Shores, used with permission from Epidemic Sound