Hi i am trying to achieve this effects in houdini can you please tell me how i would aproche this effects i basically would like to have cubes take place of the fish. I am thinking softimage emflock2 plugin but i really don't want to spend money if i don't have to

image fo the look
Link(s):

http://dvice.com/archives/2012/12/video-of-the-da-59.php [dvice.com]

thanks guys

Hey, that looks awesome!!!

Never seen a fish tornado xD

Actually you could do without any flocking techniques.

Easy way, try to setup a POP sim swirling in a tornado and then copystamp fishes/boxes/whatever on top of those? Be sure to use the interact pop so you can give them a radius so they won't intersect.

Ideally you could also use RBD solver just to solve the interpenetration of the fishes.

What point are you stuck in?