Hair Algae or shrimp goo?

[dmolavi]

I was going to post a convoluted post asking about what this stuff is, but I decided to just post it up on youtube:
Is this hair algae or shrimp goo? - YouTube

If anyone has any ideas what that stuff is, or if I should be concerned, please post back here (vs in the comments on youtube).

Thanks.

 

[ezy33]

IMO it looks like hair algae that has rehydrated.

 

[dmolavi]

Do I need to clean it off, or will it eventually detach and decompose?