Scaling the clam growth

I've been trying really hard to photography my 10" stardust squamosa clam. But I think it has to do with the camera none of the photos I take end up doing justice to how huge and beautiful this clam is.
The photo below is probably as good of a testimony as it can be:

The yellow tang is fully grown- 5" and thick! it was about 5-6" over the clam as this was taken so picture the fish a bit smaller if it was a bit closer to the clam. I think seriously thinking of investing on an underwater camera (or even a go-pro!)

Squamosa clam has a special place in my aquarium keeping- My interest in salt water aquarium started when I visited the Waikiki Aquarium- There was a huge Squamosa clam at its entrance (must have been ver a foot) with small clowns swimming freely through it. Here is a video.