Do I have a Fungal Overtake

[BirdRockReefer]

So I blasted the white lights to do a good cleaning of my tank today. I noticed so weird white fungus/sponge growing on some of my corals. Are they all connected? Is it separate issues? Any advice?

Excuse the floating algae. Big scraping and scrubbing day.

 

[tsouth]

These look more in line with a sea sponge instead. Looks safe to me.

 

[BirdRockReefer]

Will they smother the coral at all? Or will corals not really care?