Posidonia australis is a species of seagrass that occurs in the southern waters of Australia. It is sometimes referred to as fibreball weed. The marine plant forms large meadows that are considered to be of high importance to the environmental conservation of the region. Balls of decomposing detritus from the foliage of the plant are found along nearby shore-lines.
A flowering plant occurring in dense meadows, or along channels, in white sand. It is found at depths from 1 metre to 15 metres. Subsurface ...