human
Write a detailed description of a spooky scene outside a coastal area with a ring, silt, and coral.
assistant
A large ring marks the features here, and the silt is disturbed and sunken as if something buried has been removed. Small starter patches of coral and an assortment of sea plants are worked around the ring's perimeter, and from time to time a curious dweller of the depths will venture forth and test the ring's boundary. Few, however, linger within the perimeter for long before darting back out of sight.