Now THIS is a tight squeeze: The tiny green island ruled by an army of four million penguins 

Welcome to Macquarie Island, which is home to an incredible four million penguins of all shapes and sizes 

While you may expect their personal island paradise to be covered in snow and ice, Macquarie is actually lush and green 

A sea of King Penguins can be seen bathing in the ocean off Lusitaina bay on the packed Macquarie Island

A gang of penguins stride across the sandy beach on their lush paradise island, located more than 900 miles south of Australia

This image shows just how tightly packed the beach areas become. This is a king penguin colony on the east coast of Macquarie 

All stages of life: A royal penguin feeds its young (left) and a more grown up chick stands beside its king penguin senior (right)

Playing happily in the waves next to their island haven, a number of King Penguins swim in the ocean in a row 

King penguin adults surrounding a creche of chicks on beach, keeping them warm and protected from the coastal wind

They do not rule exclusively, the birds have to share their Australian paradise with 100,000 seals, mainly elephant seals

King penquins swimming off of Macquarie Island, halfway between New Zealand and Antarctica

The birds have to share their home with the occasional boat trip. Tourists are keen to see the animals in their natural habitat

Parks rangers oversee all visits, and strict guidelines control how many people come ashore at once

A stunning aerial view of a king penguin colony at Lusitania bay rookery that's thousands strong

The population was once near extinction, following extensive hunting in the early 20th century for its fur and blubber

The island, also home to 100,000 seals, was made a Unesco World Heritage site in 1997 to further protect the island's residents

Daily exercise: Royal Penguin take a waddle on the beach on Macquarie Island off the coast of Australia

The creatures enjoy their haven free from the threat of humans

Thousands of royal penguins stretch out almost as far as the eye can see

 Trips are fairly restricted, with permits from the Tasmanian Parks and Wildlife Service being required prior to landing

A sea of adults and chicks can be seen on the beach, with the youngest still retaining their brown fluffy coat

Green paradise: The little penguins fill out the beach space on the island, surrounded by lush foliage and rolling hills 

Swimming lesson: Tourists on a boat snap a multitude of penguins taking a dip in the ocean

A group of tourists head to the island to see the sea elephants and royal penguins in the 1950s