References: 

-	NALEPA, T.F., J.S. Houghton, R. Paddock, and J. Janssen. Video Clip 3: Close-up view of inhalant siphons of quagga mussels (Dreissena rostriformis bugensis, deepwater morph) on the Midlake Reef Complex in Lake Michigan. In Quagga and Zebra Mussels: Biology, Impacts, and Control, Second Edition. T.F. Nalepa, and D.W. Schlosser (Eds.). CRC Press, Boca Raton, FL, 751 pp. (2013).

-	Mayer, H.M. Current trends in Great Lakes shipping. GeoJournal 2, 117–122 (1978). https://doi.org/10.1007/BF00185903

-	Egan, D. (2018). The death and life of the Great Lakes. New York: W.W. Norton & Company.

Myles Markey