When my sister and her boyfriend were visiting the other weekend, we went to the Blue Reef Aquarium. I've been past nearly every time I've been to the coast, but never got round to going before.
There were otters (smelly but cute), piranhas (slower than you'd think), seals (splashy; popular with the kids). Seahorses (amazing!) and Picasso fish (hilarious) and clownfish (Nemo!). Rays and lobsters and crabs. Turtles. (The woman in reception said the funniest thing was when they climbed onto the rocks and all on top of each other and then fall into the water.) Sharks. (Shaaaahks!)
When we walked past the python tank, someone was dangling a dead (or at least very sedate) rodent into the cage by its tail. D wouldn't let me stay and watch as he thought I was going to cry. I have to confess to a love of rodents (when an old friend's pet rat died I cried and cried) but I was mostly just fascinated. My sister watched, though, and apparently the snake wasn't hungry so they took it out again.
There were even bumblebee frogs. They were particularly cute.
For those with kids, they have fishy rubbing stations - basically brass rubbings of fish to do. I say they're aimed at kids... my 21 year old sis did some of them, and her 32 year old sis might even have done one ;o)
A friend had told me it's not very big so to take my time going round. We spent almost two hours looking at the fish and I could have spent longer. However my water-phobic husband had pretty much reached his limit.
He got a stuffed shark as his reward for being put through such torture.
It was fun. Recommended if you have time to kill at the coast.