Read it through once

It was porpoises—porpoises aglow with phosphorescent light. They presently collected in a wild and magnificent jumble under the bows, and there they played for an hour, leaping and frollicking and carrying on, turning summersaults in front of the stem or across it and never getting hit, never making a miscalculation, though the stem missed them only about an inch, as a rule. They were porpoises of the ordinary length —eight or ten feet—but every twist of their bodies sent a long procession of united and glowing curves astern. That fiery jumble was an enchanting thing to look at, and we stayed out the performance; one cannot have such a show as that twice in a lifetime. The porpoise is the kitten of the sea; he never has a serious thought, he cares for nothing but fun and play. But I think I never saw him at his winsomest until that night. It was near a center of civilization, and he could have been drinking.