The Marlborough Sounds are an extensive network of sea-drowned valleys at the northern end of the South Island of New Zealand. The Marlborough Sounds were created by a combination of land subsidence and rising sea levels. According to Māori mythology, the sounds are the prows of the many sunken waka of Aoraki.
Tory Channel, a major arm of Queen Charlotte Sound.
The Sounds visible to the left of the Space Shuttle, image taken from the International Space Station
The Marlborough Sounds as seen from the Wellington-Picton ferry.
A ria is a coastal inlet formed by the partial submergence of an unglaciated river valley. It is a drowned river valley that remains open to the sea.
Port Jackson, also referred to as Sydney Harbour, is a ria, or drowned river valley. The deeply indented shape of the ria reflects the dendritic pattern of drainage that existed before the rise in sea level that flooded the valley.
A satellite view of Galicia
Ria of San Vicente de la Barquera in Cantabria, Spain
Ria of Rijeka Dubrovačka in Dubrovnik, Croatia