Aquaman in the middle off a desert.
A desert was an ecosystem that was common on some worlds, including Earth.
There was usually very little moisture in deserts, as rain was far less frequent as it was in forests and jungles.
This meant that such areas were generally far more hostile to animal and plant life, although cacti were common.
Also, the temperatures were often quite extreme in deserts, as they were either freezing cold or blisteringly hot.