How the beaches disappear

The photo belongs to the beach of El Tirano in the Margarita Island (Venezuela) at the Eastern Caribbean. This was a spacious beach but progressively the sea has reduced it extension. The local press assures that it is a consequence of the sedimentation.
Is it an effect of the Climate Change, of the global warming? I do not know which the cause is really but the true is that the beach is disappearing. The phenomenon is happening in other beautiful beaches of the Island; especially in one of the world most famous places for windsurf: El Yaque. This kind of facts should call the attention of all the people involved in the environment protection.
Those are specific cases but it is sure that something similar is happening in other places of the world. The scientists have warned that the global warming will increase the oceans level in an important amount and that this fact will affect the low coastal regions. Is this the Margarita situation? The scientists must give its opinions…The destruction of the trees; the construction of big buildings, artificial fences and harbors are other important causes of the coast depredation.
Preserving the coasts and the seas resources is a priority.