Typically, you might get a dusting of sediment in a bottle especially if you are making a fruit wine or mead (melomel) but if you are getting a significant layer of lees in the bottom of a bottle you may be bottling too quickly. Certainly, yeast will drop out of suspension but just about every cell should have been removed before you bottle and fruit particles - tannins and some color and other compounds drop out and again, you should be pretty confident that your bottles are going to be clear before you bottle. If you are making very small batches then the likelihood is that you will have drunk the mead before any lees will fall out of suspension and if you are making a large batch then you may want to wait 6 -9 months or longer before you bottle (racking every two or three months to help clear the mead and remove the sediment from your honey wine...