Grand Anse in the south of Praslin is a very long beach, reaching from the airport all the way to where the road goes inland to Vallée de Mai. Unfortunately, this part of the beach suffers from erosion, so there is a long stonewall protecting the land behind the beach. There are a few small rivers running into the sea in this area that bring a lot of sand with them. Everywhere else, the lagoon is covered with seaweed. Seaweed is a natural phenomenon and while some people don´t particularly like it, others love to go snorkelling in search of seahorses and other fish.