抄録
This paper describes some locomotion modes of small aquatic and beach creatures. Some locomotion mechanisms of small living things which live in underwater and the seashore were analyzed by a digital high-speed video camera system. Test living things in this paper were zooplanktons, opossum shrimps, cirolanid isopods, and amphipods. Free swimming and tethered swimming of small aquatic creatures were analyzed from the viewpoint of hydrodynamics. Walking and jump behavior of small beach creatures were analyzed from the viewpoint of kinetics. A swimming mechanism propelled by the magnetic torque was manufactured in order to investigate the swimming characteristics of aquatic creatures. Frequency characteristics of artificial mechanism were also examined experimentally. The diversity of locomotion characteristics of small aquatic and beach creatures was clarified from the viewpoint of dynamics.
