Phytoplankton are usually most abundant in this area when spring melting and runoff freshen the water and add nutrients just as sunlight is increasing.
The arrow-shaped island in the Aral Sea used to be a 35-kilometer-long visual marker, indicating the Aral Sea to astronauts. An image from the present International Space Station increment shows how much the coastline has changed as the sea level has dropped during the last three decades.