Penguins (scientific name: Spheniscidae): Known as the "ship of the ocean", penguins are one of the oldest swimming birds. They may have settled in Antarctica before the earth wore ice armor. There are 17 species of penguins in the world, most of which are located in the Southern Hemisphere. Mainly living in the southern hemisphere, it belongs to the order Penguinidae. Characteristics are that it cannot fly; its feet are at the lowest part of the body, so it is in an upright posture; there are webs between the toes; it is plantigrade (other birds touch the ground on their toes); the forelimbs are fin-like; the feathers are short to reduce friction and turbulence. A layer of air remains to retain heat. The back is black and the belly is white. The main differences between species are head shape and body size.

Penguins can live and breed in severe cold temperatures of -60°C. On land, it looks like a Western gentleman in a tuxedo. He walks with a sway, falls and climbs when encountering danger, and is vulnerable to wolves. But in the water, the penguin's short wings become a pair of powerful "paddles" and can swim at speeds of 25-30 kilometers per hour. You can travel 160 kilometers in one day. Mainly feeds on krill, squid, and small fish.

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