Even when you think you've seen everything there is to see in one marble, a closer look reveals a burst of beauty like a treasure hidden away until now.
I discovered this underwater paradise today inside a Master Marble Sunburst marble, made sometime between 1930 and 1941. Upon closer inspection it seems Seaburst would be the more appropriate name.
This was taken with my humble Canon PowerShot A630 using flash and macro focused to an inch away.
Here is the original, very large version [1mb] so you can really appreciate it.