Answer:
11-12.crocodile-The crocodile is well designed for swimming in water, where its movement appears fluid and effortless. ... The crocodile has six modes of locomotion. These are the belly-crawl, high-walk, galloping, swimming, floating, and diving.
13-14.toad-While frogs often use the strength of their muscular hind legs to hop long distances, toads generally move by crawling and using short hops.
15-16.starfish-A starfish moves with the help of tube feet. These are present on its bottom surface and result in very slow movement. Water helps to displace the creature and allow it to remain stable, but mobile! ... The means of locomotion for a starfish is through their tube feet.
17-18.fish-Fish swim by flexing their bodies and tail back and forth. Fish stretch or expand their muscles on one side of their body, while relaxing the muscles on the other side. This motion moves them forward through the water. Fish use their back fin, called the caudal fin, to help push them through the water.
19-20.jellyfish-The jellyfish swims by contracting and relaxing a ring of muscles around the bell. The muscles open and close the bell, drawing in water and then forcing it out again to push the jellyfish forward.
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