Genus Chaetomorpha

1. Habit. 2. Fragment of filament showing dividing cells. 3. Pile overgrown mostly by Chaetomorpha antennina, the upper intertidal zone at low tide (Nha Trang City, Vietnam). April 2007.

1. Fragment showing barrel-shaped cells. 2. Secondary finger-like attachments. 3. Basal portion of filament with rhizoids. 4. Middle intertidal exposed to air at low tide (Sesoko Island, Okinawa, Japan). April 2005.

1. Filaments. 2. Filament showing dividing cells with thick wall. 3. C. javanica tangled with Cladophora socialis and Chaetomorpha linum, forming extensive floating masses on the surface of O Lan Lagoon (Vietnam), April 2006.

1, 2. Filament structure. 3. Intertwined filaments masses in intertidal pool (Sesoko Island, Okinawa, Japan). May 2005.

1. Habit. 2. Habitat, low intertidal (Peter the Great Bay, the Sea of Japan, Russia). August 2013.