Biologists feared that the Wyoming toad was extinct until 1987 when a fisherman discovered a population at Mortenson Lake on Swanson’s land. The discovery created excitement about a chance to save the species and its habitat, and it led Swanson...
Two manatee surfacing to breathe in Crystal River National Wildlife Refuge. Note scar on back of one manatee from boat propeller. For more information on manatees visit http://www.fws.gov/northflorida/manatee/manatees.htm
Two manatee nuzzling noses together in Crystal River National Wildlife Refuge. Note scars on back on one manatee from boat propeller. For more information about manatees visit
Manatee playing with a crab trap line in Crystal River National Wildlife Refuge. Trap lines pose a common danger of entrapment for manatee.
For more information about manatees visit
Wetlands; Wildlife management; Human impacts; Coastal environments;Estuarine environments; Coastal environments
Tidal marshes of the United States cover about 13,000 square miles, approximately the combined area of Connecticut and Massachusetts. From a global perspective, marshes form a narrow fringe of intertidal flats along ocean coasts. They are vegetated...
Aquatic animals; Aquatic environments; Biological control; Habitat conservation; Invasive species; Population control; Work of the Service;
This is a plan to prevent zebra mussels and other aquatic nuisance species from spreading westward. This document includes background on the issue, including the current and potential impacts, ecological, economic and otherwise, the spread of these...