What type of algae

[Greenpillow]

Front and center. When I searched for red lettuce algae it did not look the same.

 

[smithce79]

Looks like cyanobacteria to me but Im not sure.

 

[Greenpillow]

It's a solid paper like peice.

 

[Greenpillow]

Kinda looks like an ear

 

[melosu58]

Having a hard time seeing it. Maybe a sponge?

 

[Sniperhank]

If it is hard I'd say it is either a dead coral skeleton covered in cyano or more likely it is coraline. I have some plating red coraline algae, just not that big.

 

[Rosesrblu1]

Does it wipe away or is it hard and cancerous? Wipe away =Cyano. Hard and crusty=good corralline

 

[Greenpillow]

It is 100% not cyano. It is a leaf/paper like red/purple cup shape thing. Looks like spinach.