How do penguins protect themselves from enemies in the water?

Penguins protect themselves from enemies in the water primarily through their agility and speed. They are Excellent swimmers, using their streamlined bodies and flippers to evade predators like seals and orcas. Additionally, they often swim in groups, which provides safety in numbers and makes it harder for predators to single out an individual. Their dark-colored backs also help with camouflage against the ocean depths, further aiding in their defense.