SHARES Research boat explores a sinkhole on the northern edge of Rockport’s Middle Island. Image: NOAA/David Ruck, Great Lakes Outreach Media What do sharks, mysterious sinkholes, Indigenous foods, poaching and Milwaukee harbor have in common? All were topics of the most-viewed stories on Great Lakes Echo last year. And more than half – nine – of the most popular 16 stories dealt with wildlife Some on the top-16 roster were newly reported in 2020, including ones about mysterious sinkholes under Lake Huron and recipes for Great Lakes Indigenous foods. But other stories displayed a long lifespan of reader attention, including the most popular one – about bull sharks in the Great Lakes (not) published in 2015. The longest-lived – about regulating water levels on the Great Lakes – first appeared in 2009.