What type of algae is this

[420reffer]

This algae is hard and sticks on to the rocks really good wat kind is this algae

 

[Saltyreef]

This algae is hard and sticks on to the rocks really good wat kind is this algae

Looks like bryopsis

 

[mav3rick478]

If it looks like a fern then like stated above it's Bryopsis. A Lettuce nudibranch will eat it or an Emerald crab will take care of it if it's only in that one spot.