Adaptations for moving in water include streamlined body, flippers, flattened tails, and fusiform body shapes.
Thick layer of blubber is the adaptation that does not help an animal move through the water. While a streamlined body, flippers, flattened tails, and a smooth, almost furless body aid in moving efficiently through water by reducing drag and increasing speed, a thick layer of blubber does not contribute to enhancing movement in the water.
Animals in aquatic environments have evolved various adaptations to thrive in their habitats, such as fusiform body shapes, gills for oxygen absorption from water, multiple fins for swimming, and swim bladders for buoyancy control.
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