Phylum Cyanobacteria, Lichens  and Fungi

Cyanobacteria produce oxygen as a byproduct of photosynthesis. Although they are known as Blue-green algae, they are in fact not an algae because their cells do not have a nucleus. 
Marine Lichens are organisms made up of a fungus and a cyanobacteria that exist in a symbiotic relationship.
The photos below are pictures of organisms that I believe fall into one of these two categories

Unknown green stuff!

 

A spread of about 10 feet

 

Lyngbya majuscula ?

 

Unknown

 

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Oxygen Bubbles from photosynthesis

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Unknown

 

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Leptolyngbya crosbyana?

 

Leptolyngbya crosbyana?

 

Leptolyngbya crosbyana? 

 

Black Band Disease

 

Fuzz-Ball Algae

 
Fuzz-Ball Algae - Lyngbya majuscula

Fuzz-Ball Algae

 

Fuzz-Ball Algae?

 

Marine Lichen - fungi?

 

Marine Lichen?

 

Marine Lichen?