While seagrasses were the dominant plant species forming distinct habitats on soft sediments, other plants were also found including Caulerpa trifaria, a green algal species that can have extensive rhizoidal networks in the sediment. This species can form extensive beds similar to those formed by seagrass. Caulerpa species are also a common element of the biota where reef forms a boundary with sand in more sheltered waters, however this usually extends deeper, up to 15m depth.

Click on the link below to view a short movie of caulerpa habitat.