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Yellowstone National Park Fumaroles
Fumaroles, or steam vents, are hot springs with a lot of heat, but so little water that it all boils away before reaching the surface. At places like Roaring Mountain, the result is a loud hissing vent of steam and gases.
Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.