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The PolkaDot Perch YouTube channel features amazing Great Lakes underwater videos. Subscribe for free and receive new posting alerts!

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Greg Lashbrook and Kathy Johnson are professional divers who specialize in filming freshwater life. Their award-winning footage is used by museums, education centers, government agencies, and regularly appears on PBS. Greg and Kathy also worked on the IMAX film, Mysteries of the Great Lakes.

Read a first-hand account of Kathy’s work as a commercial diver at a garbage dump here – “Down in the Dumps, A day in the life of a garbage dump diver.”

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