Landslip in Seychelles © Greg Bell

 Tsunami and rainfall impact
Studies have been carried out to establish the extent of the impacts of the December 2004 tsunami on the marine environment, and coastal reefs in particular. According to the New Partnership for Africa's Development, Seychelles' coastal reefs suffered damage by being in the direct line of the waves, especially on the main island of Mahe. A report from the Seychelles Centre for Marine Research and Technology has said that the extent of reef damage is worse on carbonate reefs such as around Moyenne Island and Anse Cimetierre. Granitic reefs such as at Grand Rocher seem to have been better able to withstand the damage.