Liquid Particle Physics Rendering

I'm making a game that uses liquid particle physics so that water and other liquids can pool and form blobs similar to the physX demonstrations. The question is how to make the individual particles render as a single sheet of water in indie unity. Do I need to use a mesh that wraps around groups of particles?

A method which could probably be implemented in Unity would be to treat the particles as "metaballs" and render their combined surface using the Marching Cubes or Marching Tetrahedron algorithms.