Deep Sea Hippocampus

Giant creatures of immense intelligence that lives in the deepest recesses of the seas. There are little to no records of encounters with these creatures except for less than a handful of badly damaged remains washed ashore. Their existence would remain in the obscurity if not for a surviving legend from a small fishing village. It tells the tale of a man who dedicated his life to the sea. In his old age he would tell tales of his adventures to his children and grandchildren. He told stories of how he would sometimes in his loneliness speak to the waves and to his surprise the sea would answer. It was later that his children would last see him, wandering out into the waves and a giant horse like creature would rise from the dark to greet him. Once mounted on its back the creature reared up and dove straight into the depths, never was it nor the man seen again. While many view this story as nothing more than a legend or tall tale, one can't help but wonder, what truly lives in the deepest realms where not even the sun can touch?