The document discusses different types of penguins including Emperor penguins, Galapagos penguins, and king penguins. Emperor penguins are the largest species and make long journeys through Antarctic ice to breed. Galapagos penguins have declined by over 50% since the 1970s due to habitat destruction and introduced predators on the Galapagos Islands. King penguins are stable but now have to travel farther on average to find food due to doubling of their foraging distances.