Some seaweeds form flat crusts. The most notable are the encrusting coralline crusts, which are laden with lime, a putative deterrent to grazers. They are diverse, but accurate identification requires microscopic examination of their tissues and reproductive bodies (i.e., conceptacles). Generally, thicker crusts are good competitors, overgrowing thinner ones, but are slower-growing and less tolerant of grazing.
F*CK FISH 