<span>The answer is Cellulose.</span>
Build up a wall around the lagoons a little bit to keep it from spilling over make the wall about 5-ish feet tall and made of concrete. as for the smell i can't quite figure it out but if they have air filtration systems and somthing that releases a good smell it will at least help the smell be a little better.
the gestation period of an African elephant is 22 months
Look for its special trait it has to make it a boy or girl