A seed fresh out of the pod is wet, heavy and will sink unless it's a coconut, lol. Dry seeds will float untill enough moisture is absorbed, of course. A seed with a healthy embryo should be heavy or "full" and SHOULD SINK. If not immediatly then very shortly after submersion when the outer carapis has absorbed an adequit amount of h2o. No, not all seeds are meant to float like free range chickens to whatever fate they fall into, some sink because it's natural since they usually grow ON SLOPES or away from direct water sources. Not everything grows next to a body of water. I would suspect a seed that never sinks to the bottom to be malformed with a little, unhealthy embryo or dead with no moisture in it at all. Think of the big healthy plants that have gone down the toilet only to have runts grown in thier stead!!:holysheep: