A single juvenile mudpuppy approximately 5 inches long was observed. Habitat: littoral zone of inland lake; gravel substrate with small woody debris in water 12 inches deep. elevation: 743 ft. Moon phase: waxing crescent. Jay Glase, National Park Service fisheries biologist, and Glenn Miller, US Fish and Wildlife Service fisheries biologist, subsequently reported that they had caught a mudpuppy between 10 and 11 inches long in a gill net in Grand Sable Lake on September 28, 2011. Mr. Guy (""Brody"") Block, Pictured Rocks National Lakeshore summer employee and Grand Marais, Michigan, life-long resident, subsequently reported that he had caught a 10 inch long mudpuppy in Grand Sable Lake in ca. 1982 while fishing along the eastern shore of Grand Sable Lake, south of the boat launch. Photo credit: Joe Schwartz, University of Wisconsin-LaCrosse. These may be the first documentations of mudpuppies in Grand Sable Lake.