Most of these are tropical water lilies. Although I could hazard some guesses as to variety, there are many look-a-likes and I couldn't identify with any certainty without closer views of leaf, root, and flower morphology. I see at least three different varieties, though, based on leaf and flower type. If you were looking for one like these, we could certainly point you to specific varieties.
The leaves in the top third of the photo with upturned edges ("rims") are of Victoria cruziana, one of the monarchs of the water lily family, and a huge, beautiful annual in places they are known to thrive. They can be a bit picky in cultivation outside the tropics, though.
