Source, in full
New Englands Prospect (1634), ch. 9. Same line in Samuel Clarke, A True and Faithful Account of the...English in America (1670), p. 37. The phrase "The sea-shouldering whale" attributed by Keats to Spenser's Faerie Queene (1590, '96)
Attribution
Quote text and notes from Wikiquote: William Wood (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.