Bizarre sand formation between beaches, muddy plains and marshes over a large estuary of Cadiz Bay, around salt marsh of Isla Trocadero created by action of the sea and fluvial sediments deposited over centuries. Cadiz Bay, Puerto Real, Southern Spain.

The influence of the seas and a mild Mediterranean climate are the keys that determine the special ecological characteristics of this wetland. In the contact area between marine and terrestrial zones, thanks to the easy circulation of the waters, with good lighting and characteristic soil components, these unique brain-like formations take shape, revealed two times daily at low tide.

The territory in front of Puerto Real is a protected area, and due to its shallow water, it can only be traversed by small boats or with special permits, so if sailors stray from the main tidal channel, their keels will not rip up the unique sandy bed.

By the numbers:
TIME: 8:33
DATE: aug/11
FILE SIZE: 33MP