Ammophila arundinacea (or Psamma arenaria) (Marram grass) with its long creeping stems forms a useful sand-binder on the coasts of Europe, North Africa and the Atlantic states of America.
As well as marram grass there are a lot of flowering plants such as ladies bedstraw, northern marsh orchid and cowslip.
Because of this, marram plantations seldom remain fixed unless fences are used to act as fixed points of sand buildup.
Volunteer tasks which are specifically coastal, such as marram planting, are on the whole simple and undemanding and require little equipment.
Look out for plants like sea holly, sea campion, sea spurge and grasses such as marram and sand couch grass.