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Disney+ is one of the most popular streaming services out right now, especially with its National Geographic originals — such as Earth Moods, Animals up Close With Bertie Gregory, Life Below Zero, The Space Race and Wild Yellowstone — that aim inform, educate and entertain its subscribers. While there are already plenty of perks and deals with a Disney+ subscription, the streamer is upping the ante with a contest to get a free cruise to the Galápagos Islands for Earth Day, thanks to Nat Geo.

Running until Tuesday, April 30, U.S. subscribers can enter for a chance to win a 10-day National Geographic Expeditions trip to the Galápagos Islands. The winner and a guest would board the National Geographic Endeavor II cruise ship to take in a scenic wildlife cruise, while getting access to naturalists, photographers and biologists.

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The giveaway is part of Nat Geo’s ourHOME Collection of nature docuseries, originals and short films — including Secrets of Elephants, Queens, Dolphin Reef, The Olympic Elk and Fire of Love — on Disney+ that’s designed to celebrate Earth Month.

You have to be a Disney+ subscriber to enter the giveaway. Not a member? You can sign up for Disney+ starting at $7.99 per month for the basic ad-supported plan. However, you can go ad-free for $13.99 per month, or $139.99 for an annual plan — that’s a savings of nearly 20 percent off per year.

You can also get the Disney Duo bundle, which comes with the ad-supported versions of Hulu and Disney+ for $9.99 per month, which is a nearly 40 percent savings altogether. If you’d like zero ads, you get the Disney Duo Premium for $19.99 per month, which is also nearly 40 percent off the ad-free plans of bother services.

In addition, the Disney Trio offers Hulu, Disney+ and ESPN+ (with ads) for $14.99 per month — about a savings of 45 percent off compared to signing up for separate subscriptions. You can even go somewhat commercial-free with Disney Trio Premium. It includes the ad-free versions of Hulu and Disney+ and the ad-supported version of ESPN+ for $24.99 per month.

While Disney+ is a go-to for Disney animated films, original series and specials, the streaming service is also home to the Disney company’s flagship and acquired brands, like Marvel, Star Wars and National Geographic. Sign up for a Disney+ subscription here and enter the Galápagos cruise contest here.