Algae ID please

[Todvod]

I have this beautiful algae on my sand bed. It’s green, brown and pink. It’s very flimsy and covers the sand like a stringy mat. The cuc(astrea , trochus and nasarius snails) isn’t interested in cleaning it.

A closer look. Their was snake like bacteria moving all over it as well as some oval shaped ones.

 

[DSC reef]

Looks like cyanobacteria

 

[Foothill Corals]

Cyano

 

[Todvod]

Thanks! Appreciate the quick reply.