Heart Rate differences between events

I was chatting with Shawn about HR and I couldn't remember how much lower your HR would be for different events.
Running should be the highest. Biking is typically 7 beats slower. Swimming another 7 beats slower than that. Though it would be best to actually test for your "VT" Ventilation Threshold for each event. This was just an estimate of what is typical.
What that means is if your HR is the same biking as running, you are probably training in the next higher zone while biking.
Your HR is highest while running because of the vertical orientation and you are using basically all your large leg muscles.