What is this please???

[seashells]

I found this growing on some of the rocks. Is this some type of algae???


Thanks, Doug

[reeftec]

thats padina brown algae,likes high nutrient,it will go away on its own

[rickjames]

I think the common name is scroll algae, there is a picture of it in the Bob Fenner book "Reef Invertebrates" and they say it is an ideal macro algae for nutrient export.