Sulphur bottom whale

"Another retiring gentleman with a brimstone belly doubtless got by scraping along the Tartarian tiles in some of his profounder divings. He is seldom seen; at least I have never seen him except in the remoter southern seas, and then always at too great a distance to study his countenance. He is never chased; he would run away with rope-walks of line. Prodgeis are told of him. Adieu Sulpher Bottom. I can say nothing more that is true of ye, nor can the oldest Nantucketer."