
Irish Moss - Chondrus crispus
This seaweed was pretty cool - it had red and yellowish spots. I think they are reproductive structures on the fronds, but am not sure. It could just be from disease or age. The white weed on the bottom right looks like bleached Codium fragile.
Habitat: Beach during low tide

"Chondrus crispus" is a species of red algae which grows abundantly along the rocky parts of the Atlantic coast of Europe and North America. In its fresh condition this protist is soft and cartilaginous, varying in color from a greenish-yellow, through red, to a dark purple or purplish-brown. The principal constituent is a mucilaginous body, made of the polysaccharide carrageenan, which constitutes 55% of its dry weight.