I want to share a method, that I have just learned, of separating the edible part of the pomegranate from the inedible part. Because pomegranate can stain the surface where you work, or anything it touches, it is advisable to work with the fruit under the water.
Cut the top and bottom of the fruit and lightly cut the sides. Do that in a bowl of water. Break the fruit apart and start separating the edible, red seeds from the outer skin and the white pith on the inside that envelopes the seeds.
As you remove the seeds they will fall to the bottom of the bowl, and the pith will float on top of the water. It is easy then to remove and discard the inedible pith. Seeds can be then rinsed and drained in a colander, patted dry and used as needed. The seeds can also be frozen and used within three month.