Gracilaria multipartita is a type of large seaweed in the Gracilariaceae family and Gracilariales order. Commonly know as cleaved weed. It inhabits in areas from the upper sublittoral zone, down to depths of around 15 meters and can survive partially burried in sand or mud. It can be found along the Mediterranean coast, the western coast of France and the southern coast of England,

These algae are translucent and can appear in shades of purple or reddish-brown tones, reaching lengths of up to 25 cm. They have a cartilaginous, very fragile structure. The compressed stipe slowly broadens into a blade that can be measure up to 1 mm in thickness and up to 1 cm in width between the branch points. The stipe may branch as many as six times within the plane of the blade, and the blade's edge often exhibits proliferative growth.

This specimen is a Red macroalgae, and belongs to the Rhodophyta phylum; they contain photosynthetic pigments, including chlorophyll a, phycobilins (R-phycocyanin and R-phycoerythrin), and carotenoids (β-carotene, lutein, and zeaxanthin)

Habitat: Found on rocks or other surfaces, they are tolerant of sandy environments and are located in both intertidal and subtidal zones.