Investigations of the biomechanics of Enaliarctos indicate that it used both its forelimbs and hindlimbs during swimming. Modern fur seals and sea lions only use their forelimbs, while true seals primarily use their hindlimbs for aquatic propulsion; lastly, the extant walrus uses both fore- and hindlimbs for swimming.
Studies of Enaliarctos' biomechanics reveal that it employed a bilateral approach to swimming, utilizing both its front and back limbs. In contrast, modern fur seals and sea lions use their front limbs exclusively, while true seals primarily utilize their rear limbs for propulsion. The walrus, on the other hand, uses both front and rear limbs.