Nine is a very important number for Bahai's. The Lotus temple has three rings of 9 petals, it is surrounded by nine ponds and when you want to become a Bahai, you have to go through a independent investigation of the truth by an administrative body of nine people.
This is an insect swimming in one of those nine ponds.
There are some more images of Lotus Temple that didn't make the cut. You can find there here.