The Haunted Beach

The Haunted Beach by Mary Robinson is an extremely eerie poem that deals with the supernatural. It tells the story of an isolated old Fisherman that lives at a haunted beach. A shed on the beach houses the dead body of a mariner. Because of line 69, "The Murd'rer's liquid way," I have come to believe that the mariner drowned in the ocean and washed up on the beach. The Fisherman put the body in the shed, and ever since then he has "toil'd in vain" and been haunted.
This poem seems very similar to "The Rime of the Ancient Mariner" by Samuel Taylor Coleridge. I wonder if "The Haunted Beach" is a sequel to this poem, and the dead mariner is actually the mariner from "The Rime of the Ancient Mariner." If not, the characters in each poem are definitely similar. First it is important to consider that Mary Robinson had a close professional relationship with Coleridge. She was greatly influenced by his works, and many times they actually wrote in response to each others poetry. Both poems have similar themes of isolation which lead to dark consequences. And many aspects of the two poems are the same: specters and ghosts, a dangerous sea, ominous birds, and other eerie supernatural elements. The dead man was a shipwrecked mariner, also doomed from his home. Also, both mariners make selfish decisions that get their crews killed. But the mariner in "The Rime of the Ancient Mariner" is also similar to another character in "The Haunted Beach": the Fisherman. Both of these characters witnessed horrifying events of murder, and both are doomed to dwell on these events and be haunted. Both are trying to forget them and free their souls from this darkness.
Although I don't believe that "The Haunted Beach" is a sequel to "The Rime of the Ancient Mariner," it is obvious that they are connected in some ways. It seems that Mary Robinson idolizes Coleridge's poem by writing "The Haunted Beach."