What are these on my frogspawn?

[Luan B.]

Hello,

Just noticed this on the base of both my frogspawn, looks like tiny string(?) nest. Any ideas?

 

[Luan B.]

Sorry, forgot to highlight what I’m talking about

 

[Tahoe61]

Looks like mesenterial filaments, an internal structure of the coral. Typically it not a concern. The coral looks otherwise healthy.

 

[Luan B.]

Looks like mesenterial filaments, an internal structure of the coral. Typically it not a concern. The coral looks otherwise healthy.

Thank you!