I have live rock from fuji in my new tank. This beautifull rock comes with several varieties of brown algae and I cant find one of them; have the same form al PADINA (scroll algae) but instead of been like halimeda (hard because the calcium esqueleton) is soft, small, and have several white lines. Instead of have several leafes just have one. This is all that I can tell; do you have any idea of what it is?; maybe is PADINA sp. and Im wrong to compare the texture of the halimeda with this algae? thanks