Dreamtime:Â Spinifex in a species of grass that is found in wet areas usually on the coasts. The grass is native to Australia and grows about 30cm tall. The roots of spinifex grass are very strong and go quite deep into the earth. The edges of spinifex are sharp and can produce cuts if you grab them forcefully. If you live on the coast you may have seen spinifex grass before, it is the grass that sits on top of the sand dunes at the beach. Spinifex can also be found along the coast of other places like New Zealand and New Caledonia. Spinifex grass is important as it stops sand blowing away. The powerful roots keep the sand in place. Spinifex is often deliberately planted on the front dunes to stop the beaches from eroding (wearing away).