This background is graveyard-themed and coordinates well with any of the Halloween-themed fish. Near the top of the image, thorny vines and spider webs hang from above. Spooky tree-like shapes can be seen in the background, only slightly darker than the dark purple color that dominates the image. Gravestones, skulls, skeletal fish, and orange anemones decorate the foreground along the sandy bottom.
Screenshots of the Submerged Cemetery background.