The penguin is one of the few species of bird, that despite having wings, is unable to fly. To make up for this though, penguins have perfected their jumping technique with some penguins being able to jump a couple of meters!
Penguins seem to have no special fear of humans and penguins have often approached groups of explorers without hesitation. This is probably because there are no land predators in Antarctica or the nearby offshore islands that prey on or attack penguins. Instead, penguins are at risk at sea from predators such as the seal and sharks.
Typically, penguins do not approach humans closer than about 3 meters (10 ft) at which point the penguins tend to become nervous and retreat. This is also the distance that Antarctic tourists are told to keep from penguins (tourists are not supposed to approach closer than 3 meters, but are not expected to withdraw if the penguins come closer). It is the penguins home after all.