Reaching heights of 4 feet, the emperor penguin is the tallest of all penguin species. The bird lives in Antarctica, where it dives for fish, krill and crustaceans, and it can reach depths of 1,755 feet and stay submerged for up to 18 minutes. The Emperor penguin is best known for its annual journey to mate and feed its offspring, which was the focus of the documentary "March of the Penguins."
In June 2011, an emperor penguin was found on a New Zealand beach consuming sand, which it had mistaken for snow. The bird underwent multiple surgeries to remove the sand, sticks and stones from its stomach. Following recovery, the bird, named "Happy Feet," was fitted with a tracking device and released into the Southern Ocean.