You're welcome Frank :-) It would look great with a more pronounced landscape, go for it! And i actually didn't notice the lighting before i read El Barto's comment. It's subtle but adds a very nice effect to the scene :-)
Quoting El Barto !
thanks El barto! I wanted to make an underwater scene years ago, but, never could figure how to give a bluish tint, although it is not obvious, I used led blue lighting, I think it helps, while still yet to be perfected.
Quoting Justin M :---
thanks Justin! I have been looking for lego animals for years,  and underwater ones especially, I had some luck finding used exploration kits that had the rarest, + some aquanauts kits, people don t do water scenes much, and I love them, I deliver what I wanted to see made.
Quoting Stuart Lucas
thank you very much Stuart! I had a bright spot of light that I did nt notice, but, that s what happens when I shoot after work, the screen of my camera is so small, I did nt notice it in time, ah, well, the rest looks ok to me.
Quoting Stephan N
thank you very much Stephan! yes I have used the aquanauts s kits s baseplates, I m proud to say, that I used all undersea life creatures that lego made that I know of, the black rays and dolphins are pretty rare.
Whoa! That looks awesome! If you put this MOC into a fish tank nobody would no that its not underwater because it already looks like it is! Good job! (What did you think of my season ending for A.I.L.C.?)
Ha! Now that's just plain fun. Love the look of the reef, very chaotic like real life. Love how you built in constant motion, fish and divers moving in either direction. Some great forced perspective shots too. Excellent!