Have you ever wondered what if Herman Melville had chosen to create the Cthulhu Mythos instead of writing Moby Dick? Well, wonder no more.
Young Jonah Padgett always dreamed of going to sea like his beloved Uncle Calvin, who bequeathed him a letter of introduction and a strange amulet shaped like a dolphin upon his death. Jonah signs on to the whaler Absalom, under the command of his uncle's old friend, Captain Solomon, who is determined to bag "King Jim", a sperm whale said to be as big as a mountain with skin as black as a bible, and in command of a harem of a hundred females.
But when the Absalom signs on the South Seas Islander called Koro as a harpooner, the ship finds itself beleaguered by inexplicable disappearances and horrific death, which pits shipmate against shipmate. Jonah soon finds himself adrift in a fantastical world filled with dolphin-like merfolk and nightmarish were-sharks, endangered equally by inhuman creatures from the ocean's depths and human fear and superstition, his very life at the mercy of something as old and mysterious as the sea itself.