(i) Erosional work of sea waves:
- When the waves break at the coast, they bring with them water, transported stones, pebbles,sand particles, etc. This leads to the erosion of the coast.
- Because of the chemical and hydraulic action of the sea wave too, the erosion occurs. The landforms like wavecut platforms, sea caves, sea arches, sea cliffs, etc. are formed because of the erosional work of the waves.
(ii) Depositional work of sea waves:
- The eroded materials accumulate at the sea bed. Because of tides, they keep on moving towards the coast and away from the coast.
- They become fine because of attrition and hitting towards each other.
- Deposition of such materials occurs at the places where the effect of waves is less. The landforms like beaches, sand bar, lagoons are formed due to the depositional work of the sea waves.
