Penguins are a kind of bird, but they do not have the ability to fly, but the ability to swim. Therefore, the penguin's food is mainly a variety of aquatic animals. Wild penguins will prey on many animals in the water as their own food. The two most common types are small fish and shrimp. Especially Antarctic krill, is the most important food for penguins, penguins living in the Antarctic region mostly like to eat this Antarctic krill. In addition to these two groups, there are brachiopods, such as squid, octopus, nautilus, cuttlefish and so on, which are common cephalopods in the water.
In addition, there may also be some penguins living in the zoo, they do not need to hunt by themselves, and humans can provide them with food regularly. The penguins here eat a similar diet, mainly fish and shrimp.
As mentioned above, penguins have the ability to swim, and this ability is the main ability they use when hunting. When penguins hunt, they dive into the water. Because the surface of the sea may be covered by floating ice, they will dive deeper to feed, sometimes more than 50 meters deep. They will follow the light source to find animals in the sea, and when they find prey, they will rush to catch it quickly. Because penguins swim very fast, they are also very efficient at catching prey, sometimes catching many animals at once.
However, because penguins breathe with their lungs, they can't always potentially hunt in the water. In general, after 20 minutes of diving, penguins must come out of the water to breathe once, and then continue to dive into the water to hunt.