| 摘要 |
PROBLEM TO BE SOLVED: To provide an underwater imitation creature such as a clione, a jellyfish, a sea horse, etc., and a swimming tank for the creature to swim underwater, rising and lowering. SOLUTION: A clione 10 as an underwater imitation creature, as shown in the figure 2, has a buoyant body 11 buried in a red internal organ 12, which is wrapped in a clione-shaped floating main body 13. When the floating main body 13 is in the floating condition, the posture of the floating main body 13 is kept vertical, and the speed of rising of the clione is determined by the volume of the buoyant body 11 as well as the clione's own weight. The clione 10 and the internal organ 12 are molded of layered plastic materials such as silicone rubber, elastomer, soft vinyl chloride, etc. As the buoyant body 11, a foam material such as styrofoam, sponge, etc., or a hollow-molded plastic hollow material is used.
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