The South Carolina Aquarium is a great place to take the kids and escape the heat for a couple of hours. It's got enough of the big exhibits and giant tanks to wow the young and old alike but it is super easy to get to and can be done in an hour or two without feeling like you're rushing through all of the exhibits. Don't get me wrong, you could spend all day there but if you're looking for a quick educational getaway for the kids, it checks off all of the boxes there, too.
Also, they've got Lemurs!
This photograph was captured with a Sony a6300.