Summary:

The first episode illustrates the wildlife settlement of coastal islands, in which thousands of them worldwide where animals struggle for survival reflects challenges for all life on Earth. Somewhere on the island of Escudo off the coast of Panama, a male pygmy three-toed sloth heard the distant mating call as he swims across the shallow mangrove seas in search of a lone female. On the Komodo island of Indonesia, male Komodo dragons compete with each other to earn the sole mating right. Isolated from the continent of Africa, Madagascar provides a home to several species of lemurs which include giant endangered indris, a conspiracy of ring-tailed lemurs, small bamboo lemurs, and leaping sifakas. At the Fernandina Island of the Galápagos, a newly hatched marine iguana miraculously escapes the onslaught of predatory Galapagos racers before climbing to the cliff top for safety. From the sub-Antarctic of New Zealand inhabited by thousands of birds, Snares penguins perform their sub-breeding season, shearwaters fly off to collect food for their young, and a male Buller's albatross tries to find a female to mate. A female white tern from Seychelles nestles her egg on a bare branch and incubates it while brown noddies settles their nest on a pisonia tree. A Seychelles fody consumes the tern's egg and the young noddy is entangled by the pisonia's seeds. Located on the Indian Ocean, Christmas Island is infested with numerous species of crabs, including a cast of million Christmas Island red crabs as they migrate across the island to reach the feeding shore. Some are attacked by a swarm of invasive yellow crazy ants. Millions of chinstrap penguins settle on an isolated volcanic island called the Zavodovski Island off the coast of the Southern Ocean, enduring hostile environments such as extreme mass waves, violent storms, ravaging skuas, and noxious volcanic gases. The mother penguin guards her chicks against the skuas while her partner returns to their nesting place with food after his fifty miles journey from fishing before she switches places.

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