This article is about the Deep Sparse Reef. You may be looking for the Sparse Reef.
The Deep Sparse Reef is a cave system that can be found in the Sparse Reef biome.
The Deep Sparse Reef features numerous deep trenches and intertwining cave systems, which are populated by large groups of Shuttlebugs, Eye Stalks, and Tiger Plants. Deep within the area is an entrance to the Blood Kelp Trench. This biome is devoid of most life.