Chondria coerulescens has bluish or yellowish fronds with blue iridescence. The fronds are flexible and cartilaginous in texture, turning black when dry. Young axes show a striking turquoise iridescence when alive. The thalli consist of cylindrical erect axes or trailing tufts, and is 3-8 cm high when erect. The distinct main axis is 0.4-0.5 mm in diameter, branching sparsely at irregular intervals in a spiral pattern to 1-3 orders of branching. Branches are linear, often long and curve downwards gradually tapering to a slender point, and reattach by secondary holdfast. The morphology shows relatively little variation except that some thalli consist only of inconspicuous isolated erect axes whereas others form dense tufts.

 Link for MarLIN

Link for Algae Handbook (Pereira, 2010).