brown algae
green algae
red algal crusts
unknown
Any non-calareous encrusting algae

PHOTO CREDIT: https://limpets.org/rocky-intertidal-monitoring/ri-species/
Other images:
Distinguishing features: Fleshy/spongey to the touch. Grows synonymous to rocks, can be bumpy or flat.
Easily confused species and differentiation: URFC, UBFC, UGFC
Extended Description: If you can’t tell the color (usually an issue between brown and red crusts) use this code. Header image is an example, hard to delineate if it is a brown or red fleshy crust!