Grasses on the Vero Beach Dunes

Here I document two types of grasses growing on a dune on the shore in Vero Beach.
It's spring and the grasses on the left are nearing the end of dropping their seeds. They have a large and solid appearance, extending outward towards the edges of the dune they have established. The grass on the right seems to be in vegetative growth and its appearance isn't as nice as the other larger grass. This grass on the right looks mangled and dry, but then again it takes a tough plant to take all that sunlight, wind, and salt.