Genus Ulva

1. Fragment of plant. 2. Сells from surface view. 3. Turf-forming alga in the middle intertidal zone, Hainan, China, April 2009.

1. Habit. 2. Surface view of cells. 3. Transverse section. 4. On intertidal cement blocks (Xom Con, Nha Trang city, Vietnam). March 2007.

1. Surface view of cells. 2. Transverse section of blade. 3. Habit. 4. Intertidal (Sesoko Island, Okinawa, Japan), December 2002. Inset: long strap-like blades overgrowing pier wall (overhanging at low tide).

1. Habit. 2. Surface view of cells. 3. Free floating masses (O Lan Lagoon, Vietnam). March 2009.

1. Habit. 2. Surface view of cells. 3. Cell wall of hollow thallus in transverse section. 4 Intertidal (Kai River estuary, Nha Trang City, Vietnam). March 2007.

Low intertidal. Inset: habit (Peter the Great Bay, the Sea of Japan, Russia). August 2010.

On low intertidal boulders, Peter the Great Bay, the Sea of Japan, Russia. August 2012.

1. Habit. 2. Surface view of cells. 3. Transverse section of blade. 4. Upper and middle intertidal (Sesoko Island, Okinawa, Japan). April 2003.

1. Fragment. 2. Surface view of cells. 3. Transverse section. 4. Plants densely overgrowing rope of lobster farm construction (Mot Island, Nha Trang Bay, Vietnam). April 2007.