Seaweed
"Seaweed" is a colloquial term and lacks a formal definition. A seaweed may belong to one of several groups of multicellular algae: the red algae, green algae, and brown algae. As these three groups do not have a common multicellular ancestor, the seaweed are in a polyphyletic group. In addition, some tuft-forming bluegreen algae (Cyanobacteria) are sometimes considered to be seaweed.
Suaeda maritima
Suaeda maritima is a species of flowering plant in the amaranth family known by the common names herbaceous seepweed and annual seablite. It is a yellow-green shrub with fleshy, succulent leaves and green flowers. It grows to about 35 cm in salt marshes.