Aglaothamnion tenuissimum

Algae

Aglaothamnion tenuissimum is a red seaweed growing in delicate, finely branched tufts, 30–80 cm tall. It often grows on seagrasses (Zostera spp.) or other seaweeds. It is widely distributed in the North Atlantic. In 1978, it was discovered in San Francisco Bay where it is established. Populations in Brazil and Australia are considered cryptogenic.