I have thought of a cool new idea! Ok, it's best if you have EA for this. So, anyway, look for a EA map that says about a dried up river in the rainforest, if you go to it, look for a large wetland place with water dotted about, then go to the entrance, look for a funny looking path that you can't buy, then look for a waterfall, if you have found all this, you are in the right map. You don't have to delete the path for this, the path looks like something from an ancient rainforest ruin, so keep this. Now, go to the wet lands part, and put some wet land-dwelling animals there, next, put some artic cod (MM needed) in the water that is dotted about. Now, go to the rainforest waterfall and put koi (MM needed) in, go along all the water places putting in artic cod for the wet lands places and koi for the rainforest places. Now place rainforest animals in the rainforest part, like tigers, black panthers, so on. Now, close the zoo and go into guest mode or camera mode. You can now take pictures and wander around, as if you are in the rainforest that has a dried up river in it, just run around, looking at the animals and so on! It's really fun and you can get beautiful pictures by doing it.
Marine Mania needed for coral reef.
Do almost the same for the coral reef one, except pick a map with a coral reef in it and place marine animals in the reef and then put fish in the coral reef and swim around, taking pictures and watching the animals in their natrual habitat. It's actually quite relaxing.