They were an interesting anecdote that you can tell all your friends during awkward silences.[:)]
Some people (my wife being one) would say faeries. Especially since you saw them in the woods.
Some people would say hallucinations. That's plausible, but the people who say this seem to think we're all a bunch of big hallucinators.
Either some energy creature, or energy phenomenon. Have never experienced something like that, myself. Sorry I couldn't help you.[8)]
dig in older topics, there are pictures of such orbs somewhere here
as for explanation - just energy, something could be nearby
here the other day i was out in the woods... then i notised 1 orb about 50cm from side to side upp to my right, it was flying slow down in an arch intoo the ground, then a cupple of secons after the first one was gone a nother one did exactly the same... they had no color but they bent the light a little bit. any one know what this was?