Remote islands offer sanctuary for some of the planet's strangest and rarest creatures. The rare pygmy three-toed sloth enjoys a peaceful existence on an idyllic Caribbean island, while nesting albatross thrive in predator-free isolation. But island life always comes at a cost. On the Galapagos Islands, young marine iguana must escape an onslaught of deadly racer snakes the moment they hatch from the sand. On the sub-Antarctic island of Zavodovski, life gets more extreme still. Every day, one and a half million penguins risk being battered against the rocks by fierce waves as they try to get on and off the island.

Originally released by BBC, 2016. Streaming video file encoded with permission for digital streaming by Infobase on July 18, 2017.

Escudo Island (4:14); --Komodo Island (5:07); -- Madagascar (4:35); -- Fernandina Island (4:11); -- Fernandina: Iguana Hatchlings (6:03); -- Sub-Antarctic Islands (5:35); -- Seychelles Islands (5:04); -- Christmas Island (3:52); -- Zavodovski Island (5:16); -- Zavodovski Island: Chinstrap Penguin Colony (3:41); -- Credits: Islands (0:37); .