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Daylight and fluorescent images of two coral colonies

Daylight and fluorescent images of two coral colonies, Diploria clivosa (left) and Orbicella faveolata (right) growing on the seawall at Ft. Jefferson, Dry Tortugas National Park. The two colonies are separated by an area of dead coral that has been colonized by algae. In the fluorescent image, red corresponds to chlorophyll and green to GFP. Note that

Image: A Manatee in Florida

A Manatee in Florida

USGS conducts long-term, detailed studies on the life history, population dynamics, and ecological requirements of the West Indian manatee. Federally listed as endangered, the manatee is a large, gentle, plant-eating, and slow-moving marine mammal.

Image of the front page of Sound Waves, Dec. 2018 - Jan. 2019
March 15, 2019

Sound Waves, Dec. 2018 - Jan. 2019

The stories in the Dec. 2018 - Jan. 2019 issue of Sound Waves:

Measuring Waves and Permafrost to Better Understand Erosion on Alaska's Arctic Coast

News Briefs

Added Funding Aids Recovery from 2017 Hurricanes and Wildfires

Mapping the Stamp Sands of Lake Superior

Recent Fieldwork

Partnerships with the

Daylight and fluorescent images of a Orbicella faveolata

Daylight and fluorescen images of a Orbicella faveolata coral colony in Dry Tortugas National Park. In this colony, the GFP fluorescence is so intense that it overwhelms the weaker red fluorescence of chlorophyll.