Ectocarpales, Scytosiphonaceae
Colpomenia sinuosa (Mertens ex Roth) Derbès & Solier

In natural habitat.
Photo Data
- Place
- : Samui Island, Surat Thani.
- Depth
- : 2.5 m
The plants are hollow, spherical to slightly compressed spherical, and become irregularly convoluted when fully grown. This species is slightly fragile due to low elasticity. It is found on rocks and gravel in mid to lower intertidal zones along calm to moderately wave-exposed shorelines.

Fresh specimen.