Desmarestia ligulata is a species of brown algae found worldwide.
[2] This species is found between the low intertidal to subtidal zones on open coasts.
[3] Desmarestia ligulata is known for its ability to accumulate high levels of sulfuric acid in its vacuoles.
This accumulation appears to be active and permanent, occurring during cell growth and division while unaffected by light regimes or external nutrient profiles.
[4] It has been suggested that this acid accumulation is an evolutionary adaptation to discourage grazing by fish and invertebrates.