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.
Fighting machine (The War of the Worlds)
Tripods have a large, free-moving head atop the smaller main body, giving its sole Martian occupant a panoramic view. It has four thick, metallic tentacles, which are held on high, made up of boxy-looking segments, making them appear like large bicycle chains rather than slim and whip-like, as described in Wells' novel; they are used mainly to capture humans during the film. The tripods have three long, ridged, and stilt-like legs, which occasionally stride with the right and rear leg moving forward together in a clumsy, unconvincing manner. The heat-ray sits atop the tripod "head" and has a round, spinning mirror on a metallic arm; when the mirror rotates rapidly, it emits a long-range heat-ray. The deadly chemical black smoke is emitted from the tips of the thick tentacles in the form of a spray, instead of the novel's gun-like device that fires canisters of the deadly gas over distances. The fighting machines each have a collecting basket for storing captured humans, but in the film it looks more like a standard solid metal bucket. There are other Martian machines seen in the film: a four-legged fighting machine and six-legged handling machines that somewhat resemble scorpions.