[1] As Shenzhen began to develop into a major urban centre, the northern shoreline was reclaimed to provide land for buildings.

Some departments had tried to preserve the endangered environment but mistakenly introduced foreign species of mangrove, which threatened their indigenous counterparts.

The marshes remain largely intact along the southern part of the bay, which is under Hong Kong's jurisdiction.

Like many coastal areas, it is at risk of sea level rise due to climate change, which would damage the roots of the mangroves.

From Lau Fau Shan to Mai Po, the villagers made use of the special environment's pools to cultivate fishes.

Deep Bay became the main access for illegal immigrants because border controls were harder to enforce at sea.