How do you make a fluid, net-like substance?

In Unity there are colliders and all which is great. But how do you make a net like substance that can enlarge and shrink?

For example, something like a fishing net (enlarges when objects go in it).

Basically what you need is some sort of cloth physics simulation. That would mean, you'd either have to make your own using scripting (not trivial at all), or wait for Unity 3.

I found an open-sourced script here.

http://www.unifycommunity.com/wiki/index.php?title=SoftBody.cs

you can scale the object or just create different frames for a model with different sizes as animation.