Caulerpa cupressoides

Thallus stiff, grass green to dark green, consisting of extensive spreading stout stolons, 0.8-1.5(-2.5) mm diam. with descending rhizoid-bearing branches below and erect axes above to 25 cm high. Branching generally dichotomous, rarely irregular. Each branch with 2(-3) rows of short imbricate, generally cylindrical to 0.4 mm diam., 1-2 mm long, upcurved branchlets (pinnules) with a short spine at the apex. The distichous pinnules arranged mainly opposite. Main axes cylindrical and naked at base becoming flat above, 0.8-1.5 mm broad. Rhizoids stalked, branched, whitish-yellow. Growing on sandy bottom at 1-2 m depth at sites exposed to moderate wave action.

Subtropical and tropical warters of Atlantic, Indian and Pacific Oceans. Asia-Pacific countries: Japan, China, Vietnam, Thailand, Indonesia, Philippines, Australia and New Zealand, Pacific Islands.