Portuguese man o' war
The Atlantic Portuguese man o' war lives at the surface of the ocean. The gas-filled bladder, or pneumatophore, remains at the surface, while the remainder is submerged. As the Portuguese man o' war has no means of propulsion, they move according to the winds, currents, and tides. Although they are most commonly found in the open ocean in tropical and subtropical regions, they have been found as far north as the Bay of Fundy, Cape Breton and the Hebrides.
Man-Kzin Wars X: The Wunder War
Man-Kzin Wars X: The Wunder War (, Baen Books, 2003) is a collection of four stories totalling about 140,000 words by Australian author Hal Colebatch set in Larry Niven's "Known Space" universe, as part of the "Man-Kzin Wars" series. Beginning with the devastating invasion of the peaceful planet Wunderland by the ferocious, tiger-like Kzin, they deal with the human attempts at resistance, the aftermath of eventual human victory and the slow growth of human-Kzin co-operation.