https://i.ytimg.com/vi/iw8hj2Uycvk/hqdefault.jpg
.blend and text version: http://www.blenderdiplom.com/en/tutorials/all-tutorials/615-tutorial-ink-drop-effect-with-cycles.html
Learn how to create a modern ink drop or ink in water effect using Blender and the Cycles render engine.
—
Website: http://www.BlenderDiplom.com
Twitter: https://twitter.com/BlenderDiplom
Facebook: https://www.facebook.com/BlenderDiplom
source