The barrier reef fronts the coast from Aiurua Pass to Tautira Point at and less from the shore.
2.
The reef front ( ocean side ) is a high energy locale whereas the internal lagoon will be at a lower energy with fine grained sediments.
3.
Coralline algae are important contributors to reef structure in those parts of the reef subjected to the greatest forces by waves ( such as the reef front facing the open ocean ).
4.
It was later identified in all the Mascarenes ( mainly Mauritius and Rodrigues ), where it occurs between the surface and but more often on the reef front and rocky cliffs, but also on volcanic flows.