Blue material in skimmer sock

[TRUK71]

We were trying a skimmer sock for about the past 4 days and have this strange blue stuff in it. Here's a picture. It's not part of the skimmer sock as it's way to dark of a blue. We have a blue fiberglass pool. Any thoughts as to what this might be?

 

[MITBeta]

Pool noodle?

 

[TRUK71]

You very well could be right

 

[MITBeta]

Mine fall apart eventually and bits end up in the water and ultimately the skimmer.