Help identify the algae.

Adam4310

looks like seaweed)

Caitlin3279

These are marine plants (algae) for the sea, but I don't know what they are called.

Gregory9432

Caulerpa, both this and that and the third. 1-Caulerpa serrulata 2-Caulerpa taxifolia 3-Caulerpa stahlii Although there are many different species that look similar. So there can be variations. But the fact that this is all Caulerpa is certain.

Jeffrey496

+1 Caulerpa all three.

Leslie

I agree with that, but number 3, in my opinion, is Caulerpa prolia...

Katie5500

Thank you very much, everyone. How are these algae planted, in the soil or on rocks?

Stuart

1-Caulerpa serrulata or most likely sertularoides 2-Caulerpa taxifolia 3-Caulerpa prolia. Secure them wherever you like, and they will attach themselves with small roots to the live rocks and will start to shoot out, crawling over everything that suits them.

Rick

Clear, thank you very much.

Robin

Surgeons will gladly enjoy them.

Michelle13

They may look very similar in real life, and it's even easier to confuse them in photos.

Javier5186

They are sitting on stumps and not growing.