Oh yeah, I should add a bit more, should there be something going on in the mead that you don't want.
Insert a racking cane carefully, so as not to disturb whatever is on top, then rack to another carboy, stopping the siphon before the top layer gets down to the end of the cane. Try using a smaller carboy in order to keep the headspace nice and tight, about an inch or less from than the bottom of the carboy stopper.
Sulfites might help also.
Even if the mead is uncontaminated, I'd suggest correcting the headspace. Sanitized glass marbles, dropped into the carboy, will raise the level. Make sure the marbles come from a pet store and are the type used for aquariums. Colored marbles used for recreation, ect., could leach chemicals from the coloring material into your mead. If it's safe for fish, it's safe for mead.