This time I have tried to unite two different simulations. First, the coral simulation begins from a very simple object and gradually grows. And second is particle simulation simultaneously growing from already generated mesh. To build this system in 3D space, I used time as a 4th element and it makes both simulations feel like breathing. I also used several different algorithms and some noises to create some rules so they grow during the time in a very organic, natural, and visually appealing way. 
Everything is created inside Houdini and rendered using Redshift