The good news is, you can't see much. The bad news is, that blood on the ice is coming from Richard Zednik's carotid artery.
The Florida Panthers forward needed 5 units of blood and an hour of surgery to undo the damage done by a teammate's skate in a freak accident.
Despite the damage, doctors are saying Zednik got off lucky. Considering the size of the slice and the general location, it would have been worse. Much worse.
It's time for hockey to wake up and mandate throat protection at all levels of the sport. Canadian youth hockey already requires it. Oddly enough, here in the litigious U.S.A., thousands of youth hockey players take the ice every day without any protection across the neck and throat.
The NHL could take the lead. Throat protection comes in a couple of forms (hard and soft), and all of those players who came through Canada's vast junior hockey system are already accustomed to wearing it. It's weird to read instructions for referees in games between U.S. and Canadian teams: make sure the Canadian kids are wearing throat guards (and by implication, don't worry about the U.S. skaters; it's not in the rules).
Here's what a soft neck guard looks like. A lot prettier than watching Richard Zednik's life ebb onto the ice.