Read it through once

Soothed again, but only soothed to deeper gloom, Ahab, who had sterned off from the whale, sat intently watching his final wanings from the now tranquil boat. For that strange spectacle observable in all sperm whales dying—the turning sunwards of the head, and so expiring—that strange spectacle, beheld of such a placid evening, somehow to Ahab conveyed a wondrousness unknown before.