These caves are characterized by large Bloodroots that grow on walls and ceilings, carrying large pustules of Blood Oil on their thick stems. The caves also feature many decorative bioluminescent flora and cavern formations (stalagmites and stalactites). Small Bloodvine stems also grow abundantly in the area with their bioluminescent roots always on display. Rarely, Ampeel eggs can be found in the caves located in the deepest parts of the trench.
- The Bloodroot in the caves were originally designed for the Kelp Forest Caves, but were remodeled for the Blood Kelp Caves later.