Macro Algae ID help

[rongy]

Hi, got this macro from a friend, but not sure what it is. Can anyone help ID this?

 

[Dan_P]

Hi, got this macro from a friend, but not sure what it is. Can anyone help ID this?

There looks to be two or three types, one , with flat fronds and “teeth” around the edge, is possibly a Caulerpa

 

[rongy]

There looks to be two or three types, one , with flat fronds and “teeth” around the edge, is possibly a Caulerpa

No, there’s only one type in this. The leave does look a little like Caulerpa, but I’ve never been able to find the same picture online

 

[courtneykeeps]

Hi, got this macro from a friend, but not sure what it is. Can anyone help ID this?

Caulerpa serrulata

 

[rongy]

Caulerpa serrulata

Thank you! That does sound right