It would be helpful to know what type yeast you are using and how long it has been in primary. The white spots are caused by the yeast, won't know for sure till you can answer my questions.
It is a red ale. I used East coast ale yeast and made a starter also. What you are seeing is lots of white spots sitting at the top. This is after a few hours of being racked into the secondary
What you are likely seeing is yeast rafts that have been carried to the top by the outgassing of CO2 that was caused by racking the beer to secondary. It should be just fine.
I just kegged a pale ale recipe with Nottingham dry yeast. I saw the same thing on top of my brew while it was in secondary. I took a sample and it tasted great. I wouldn't worry about it. Cheers!