Dictyotales, Dictyotaceae
Dictyota ciliolata Sonder ex Kützing

In natural habitat.
Photo Data
- Place
- : Samui Island, Surat Thani.
- Depth
- : 1.5 m
The plants are erect, bushy growing and 6-15 cm high. The branches are strap-shaped, regularly dichotomously divided, 3-6 mm wide, with spines on the margins and obtuse tips. This species is found on rocks and gravel in lower intertidal to subtidal zones along moderately wave exposed shorelines.

Fresh specimen.

Close-up view of the strap-shaped branches with spines (arrows) on the margins and obtuse tips.