Boundary markers
Yellow on-shore triangles
These are located at the park boundaries and point in towards the marine national park or marine sanctuary. In some cases there are two yellow on-shore triangles located on separate poles, one taller than the other. These two triangles can be used to get a lead to the boundary by aligning them so one is seen to be directly above the other.
Yellow in-water special mark
These markers are found on buoys and piles and are used to mark the boundaries of zones and other special areas.