This page is an exploration of 3D Parabulbs. Parabulbs can be generated by using the parallel resistor formula:
rp = 1 / ( 1 / r1 + 1 / r2 )
If you put a mandelbulb equation at r1 and r2 each with a different center point you have it. You can use different equations for each mandelbulb and have as many as you like by adding more 1 / rn terms. When the mandelbulbs get close they interact in wierd ways.
You can download a folder of files to generate the fractals.
Download Fracton document files parabulb.zip
The images have been generated with Fracton.