The gulf is named after the port city of Mottama (formerly known as Martaban).
During spring tide, when the tidal range is around 6.6 m, the turbid zone covers an area of more than 45,000 km2 making it one of the largest perennially turbid zones of the world's oceans.
During neap tide, with tidal range of 2.98 m, the highly turbid zone coverage drops to 15,000 km2.
The edge of the highly turbid zone migrates back-and-forth in-sync with every tidal cycle by nearly 150 km.
[3] The gulf is home to varieties of species [4] and the Eden's whale was scientifically recognized in the water.