Upgraded my tank size a few weeks ago, and this started growing on one of my rocks since the move. Any ideas?

[OdinPrime]

Looks kind of like a sponge, but Im not sure. Its definitely spreading pretty quickly across the rock

 

[WheatToast]

Are you able to get clearer photos under white light?

 

[OdinPrime]

Any better?

 

[zoolan70]

Are you wondering about the crescent shaped thing?

 

[OdinPrime]

Are you wondering about the crescent shaped thing?

Asking about all those little white, soft, fan looking things are on the rock.

 

[EeyoreIsMySpiritAnimal]

Asking about all those little white, soft, fan looking things are on the rock.

Looks like a macroalgae