claim: Uranium uses the symbol M.
evidence: Fish locomotion is the variety of types of animal locomotion used by fish , principally by swimming .. animal locomotion. animal locomotion. fish. fish. swimming. aquatic locomotion. This however is achieved in different groups of fish by a variety of mechanisms of propulsion in water , most often by wavelike movements of the fish 's body and tail , and in various specialised fish by movements of the fins .. fish. fish. water. water. The major forms of locomotion in fish are anguilliform , in which a wave passes evenly along a long slender body ; sub-carangiform , in which the wave increases quickly in amplitude towards the tail ; carangiform , in which the wave is concentrated near the tail , which oscillates rapidly ; thunniform , rapid swimming with a large powerful crescent-shaped tail ; and ostraciiform , with almost no oscillation except of the tail fin .. fish. fish. swimming. aquatic locomotion. fin. fish fin. More specialised fish include movement by pectoral fins with a mainly stiff body , as in the sunfish ; and movement by propagating a wave along the long fins with a motionless body in fish with electric organs such as the knifefish .. fish. fish. knifefish. Gymnotiformes. In addition , some fish can variously `` walk '' , i.e. , move over land , burrow in mud , and glide through the air .. fish. fish. burrow. burrow. glide through the air. Flight