I think the last time I was there was in 2021. I enjoyed it, but after a while we'd been on the rides so many times. Even with the meal plan being so cheap (about $7 per person per month) it got kind of tiring eating amusement park food all the time. But the meal plan paid for itself rather quickly. I think I know why they stopped issuing new memberships with the meals.
But yeah they still have the animals. Not necessarily the feature, but they still have seals and sea lions, as well as an animal show with different ones. Also a tiger show. They also have more or less a small zoo. Was wondering what happened to the dolphins. Apparently no more regular show, but they still have the dolphins in a different habitat as well as paid dolphin experiences. Found an explanation. They had a walrus there once. Not sure all the details, but the one I remember was gone and another one replaced it but died.
They used to have orcas, but they had some controversy when one died. I think they had one maybe a decade ago but ship that one to SeaWorld in San Diego.
Strangely enough I decided to fire up the Six Flags app (had to reload it) to see more about what they still have. I stopped paying for the membership, but it's got some weird programming bugs. Says that my membership is active until Dec 31, 2100. Tried to update and it looks like the new version lost all my old info (memberships are probably not a thing any more) and it wants a pass uploaded for more info.