Watching the seals gracefully turn, roll and glide as they navigate the Harbor Seal Exhibit is peaceful and relaxing. As they leisurely cruise upside down, some people may be surprised at just how fast the seals can swim. The powerful propulsion for harbor seals comes from their hind flippers. To swim fast, they spread those flippers to act like paddles and move them quickly from side to side. During a sprint, harbor seals can reach 20 mph. Seals use this speed to evade predators, chase fish, or intimidate a rival while establishing territory. In the following video Amelia creates a large wake as she demonstrates the power of her hind flippers.
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