Dubuque museum welcomes new stingrays, exhibit to reopen for viewing

Dubuque’s National Mississippi River Museum and Aquarium has welcomed new stingrays to its campus following the deaths of several stingrays last month. Museum officials shared that five cownose rays from Omaha’s Henry Doorly Zoo and Aquarium currently are acclimating to their new environment in the Delta exhibit in the museum’s National River Center. The exhibit will open for viewing Saturday, though touch tank capabilities remain on hold. An investigation of the December 22nd incident of the eight stingrays found that the tank’s water level dropped and the exhibit became supersaturated with too much oxygen.