“Sharks!” at Stingray Bay is to reopened at Brookfield Zoo Saturday after it was shut down following an equipment malfunction that resulted in the death of more than half the stingrays in the exhibit.

The rays died July 14 after a heating and cooling system failed to kick in, increasing the water temperature 10 degrees for an overall temperature of about 90 degrees.

The zoo, along with Living Exhibits, which owns and operates the stingray exhibit at the zoo, has made some changes to ensure the rays are protected.

The Chicago Zoological Society has installed a round-the-clock temperature surveillance system. Zoo officials said this computer software system monitors the pool’s temperature every 10 minutes, and in the event of an increase or decrease in temperature, the system will notify the society’s environmental quality manager so the temperature can be restored.

“To help ensure this situation does not happen again, Chicago Zoological Society staff has taken additional precautionary measures besides those that were already in place by Living Exhibits,” said Dan Wharton, senior vice president of animal programs for the Chicago Zoological Society, which manages Brookfield Zoo. “The health and welfare of the animals are our main concerns.”