Human: Write a detailed description of a spooky scene outside a coastal area pier with black sand and ghost crabs. Assistant: 
In the wind-driven swaying of lantern light, a battalion of ghost crabs can be glimpsed nearby, overtaking the black sand beaches and staking claim to the pilings beneath the pier. The planked decking underfoot creaks rhythmically in time with the incoming waves sent forth by the midnight black seas surrounding the harbor.