Videos: defending the coast with Vetiver. Examples from the Great Barrier Reef, Vietnam, Vanuatu, the Cook Islands and Brazil.

7 Ways Vetiver technology can help protect the Great Barrier Reef -- Veticon:
With roots stronger than most tree roots, the ability to improve soil fertility and absorb elevated toxicities in soil and water, Vetiver is both a protector and rehabilitator. A tool designed by nature with the capacity to minimise our human footprint. Vetiver System
Technology (VST), exclusively based on the use of Vetiver grass, can effectively protect the Great Barrier Reef and begin the process of reversing the damage....The extraordinary attributes of Vetiver System Technology make it a real life solution, which has been proven by extensive worldwide research, development and application over the past 40 years. Vetiver System Technology has been successfully used to rehabilitate coral reefs in Vanuatu, the Philippines and Guam. 
Veticon: Vetiver and Coastal Erosion. 
Traditional hard engineering methods of protecting coastlines against erosion, such as breakwaters, jetties, groynes and rockwalls may serve to protect some areas of the shoreline, however, they have adverse effects on sand flows, causing and accelerating erosion down the coastline. They can also be severely impacted by storm damage, requiring consistent maintenance and redesigns. When considering options for resilience planning and coastal protection, both the long and short-term effects need to be considered. Not only the environmental impacts but also whether the action plans are in the long-term economically viable and sustainable. Vetiver provides an environmentally harmonious, long-term workable solution, whether used alone or in conjunction with other engineering protection mechanisms. Vetiver has the capacity to act as a reinforcement system for dune and beach protection. Read more...
Vetiver system for beach erosion rehabilitation -- Paul Truong
Some examples of Vetiver planting for erosion control and landscaping on beach and estuaries around the world  
Images/video from Brazil: 
VEIVER System History, 8 years defending the coast from EROSION  by the SEA
Video shows that there is a self-sustainable and ecological solution using Vetiver. despite being in Portuguese the images are very useful.

Elsewhere -- in Vietnam:
This video, with subtitles added by the Da Nang Vetiver Foundation (Vietnam Vetiver Network), shows how vetiver grass has been successfully used for protecting seashore and nearby buildings from the impact of extreme storms and the effects of rising sea levels. It includes some interesting aspects involving acclimatizing young vetiver plants to higher saline conditions, planting techniques, use of coir matting and Ipomoea pes-caprae, also known as  beach morning glory.

Under tidal wetland conditions, vetiver can grow where mangrove seedlings grow.

 Department of Agriculture Vanuatu
Planting Vetiver along shoreline in Vanuatu:
The following solution includes mitigation of floodwater, the toa (SheOak), and planting as a dune stablisation/erosion protection measure.
  1. To mitigate the impact of floodwaters (both over‐ground and underground), plant a vetiver (grass) hedge along the top of the dune bank. The grass is fast‐growing and has a fine and dense root structure. The roots bind together the soil and aid drainage. Above ground, leaves slow waterflow and trap water‐borne sediment.
  2. Once the vetiver is established (2‐3 months), remove the stand of toa from the park edge and fill the affected area. The mature coconut palms may also need to be removed.
  3. Remove the damaged coir. 
  4. Regrade the dune area to provide an area of dry sand above the high tide mark. If appropriate, lay stronger coir matting as surface erosion protection. Use more secure ‘duck‐foot’ pegs.
  5. Evaluate plantings for the dune area in terms of their suitability to stabilise the dune. Formalise the planting plan and avoid over‐vegetating the dune
  6. Regularly monitor park and dune ‘health’, especially after storm and extreme weather conditions.