Just a little change in perspective can mean a lot! Since gravity isnt as much of an issue when you are underwater, up and down cannot be determined in the conventional way. And with the water’s reflective nature, it makes sense to explore and make good use of that!
Try take an upside down photo of your tank sometime. You will be amazed what you can see. Make sure to turn the pumps and powerheads off so you get the most serene surfave for a clean reflection.