The ceaseless sea swell has undercut these faces; jets of water are thrown up in many places by each wave as it strikes blowholes worn out of the coral, depositing dunes of sand and coral debris up to  inland. At the southeast shore of the island, the wearing-away has caused the formation of flat shelves, and the entire island is honeycombed by caverns washed out by the sea.
The relentless ocean surge has eroded these features; jets of water are ejected by each wave as it strikes worn-out blowholes in the coral, depositing sand and debris along the way. The southeast shore of the island has been shaped into flat shelves due to erosion, while the entire island is riddled with caverns created by sea water.