What is this cool coral thing?

[charliedarling]

I put this piece of branching coraline algae in my nano over a week ago and just noticed today that the base is “flowing” in the water. Does coraline algae do this or is this some kind of hitchhiker?

I’m a newbie!

Picture below, I have a video if needed.

 

[DenverSaltyFarm]

alveopora

 

[tbrown]

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