I've been to Sea Life several times now, and my daughter always has a blast. It's not a huge aquarium, so it can get a bit congested on the weekends. Definitely go on a weekday, if you can. Despite it's size, though, it has an immense variety of sea creatures and is very educational for curious kids. And if that doesn't cut it, there's always the playscape at the end before the gift shop lol.

Not the biggest or the best aquarium I have seen but pretty nice for Detroit, MI (Auburn Hills, technically). Friendly staff. A good excursion for less than $20, plus, you can walk the Great Lakes Crossing mall, one of the largest and few healthy malls left in Michigan