The alluvial region includes low swamp lands, coastal marshlands and beaches, and barrier islands that cover about 20,000 square miles (52,000 km2).

Romney Marsh is a coastal marshland of southern England.

The problem, in a nutshell, is this: the Louisiana coast, its protective fringe of barrier islands and coastal marshlands, is disappearing.

Mangrove trees and shrubs grow on coastal marshland in the brackish zone between the sea and fresh water.

At the time, the island's size was only six acres (2.4 ha), and the whole length of the Detroit River was a prominent coastal marshland.

This 45-kilometer-long lagoon stands as one of Europe's last remaining untouched coastal marshland.

An important tree with beautiful red flowers grew (and still grows) on the coastal marshland.

Much of the country's richest farmland lay under water in malaria-infested coastal marshlands.

Three years later, the coastal marshlands, nice homes and friendly but not-too-close neighbors won them over.

It inhabits a range of different grassland habitats, from wet coastal marshland to dry uplands and savannah.