20 countries perfect for nature and wildlife expeditions, along with some tour ideas:

1. Costa Rica:
   Known for its rich biodiversity, Costa Rica offers lush rainforests, volcanoes, and diverse wildlife. Explore Corcovado National Park, go on a canopy tour in Monteverde, or take a boat tour in Tortuguero National Park to see sea turtles.
2. Ecuador:
   Ecuador is a compact country with diverse ecosystems. Cruise around the Galápagos to see unique wildlife, explore Yasuní National Park in the Amazon, or hike in Cotopaxi National Park.
3. Galápagos Islands (Ecuador):
   The Galápagos Islands are worthy of it’s own bullet. A remote archipelago known for their diverse and unique wildlife, including giant tortoises and blue-footed boobies (no, these are marine birds). Take a cruise to various islands to observe wildlife, snorkel with sea lions, and visit the Charles Darwin Research Station.
4. Botswana:
   Botswana is known for its pristine wilderness areas. Take a safari in Chobe to see elephants, explore the Okavango Delta by mokoro (dugout canoe), or go on a walking safari in Moremi Game Reserve.
5. Canada:
   Canada offers a vast wilderness, including rugged mountains, expansive forests, and abundant wildlife. Visit Banff National Park for mountain scenery and wildlife, go whale-watching in British Columbia, or explore the Arctic in places like Churchill, Manitoba.
6. Peru:
   Peru combines diverse landscapes with rich cultural heritage. Take a boat tour in the Amazon to spot wildlife, visit the Ballestas Islands for sea lions and birds, or hike the Inca Trail for high-altitude wildlife.
7. Namibia:
   Namibia is known for its stark desert landscapes, unique wildlife, and conservation efforts. Visit Etosha National Park for incredible wildlife sightings, explore the Namib Desert for desert-adapted species, or go on a scenic flight over the Skeleton Coast.
8. Australia:
   Australia offers diverse ecosystems, including the Great Barrier Reef, rainforests, and unique marsupial wildlife. Snorkel or dive in the Great Barrier Reef, explore the Daintree Rainforest for unique flora and fauna, or go on a wildlife cruise in Kangaroo Island.
9. Sri Lanka:
   Sri Lanka is a compact island with a rich biodiversity, including national parks and coastal habitats. Visit Yala National Park for leopard sightings, go on a whale-watching tour in Mirissa, or explore Sinharaja Rainforest for endemic species.
10. Norway:
    Norway’s dramatic landscapes, including fjords and Arctic tundra, provide unique opportunities for wildlife encounters. Join a whale-watching tour in Tromsø, explore Svalbard for Arctic wildlife, or go birdwatching in the Varanger Peninsula.
11. Madagascar:
    Madagascar is a biodiversity hotspot with unique wildlife found nowhere else on Earth. Visit Andasibe-Mantadia National Park for lemurs, explore Isalo National Park for stunning landscapes, or go on a boat tour in Ankarafantsika National Park.
12. Kenya:
    Kenya is known for its iconic savannahs, diverse wildlife, and the Great Migration. Join a safari in Maasai Mara for the Great Migration, visit Amboseli National Park for elephants, or explore the highlands for unique bird species.
13. Antarctica:
    A pristine wilderness with unique wildlife, including penguins, seals, and seabirds. Go on an expedition cruise to explore the Antarctic Peninsula, kayak among icebergs, or visit research stations to learn about the continent.
14. South Africa:
    South Africa offers a mix of diverse ecosystems, including savannahs, forests, and coastal areas, with a wide range of wildlife species. Go on safari in Kruger National Park, visit the iSimangaliso Wetland Park, take a boat tour for whale-watching in Hermanus, or visit Boulders Beach for penguins.
15. Greenland (Arctic Circle):
    Greenland is the world’s largest island, known for its dramatic Arctic landscapes, icebergs, and polar wildlife. Take a cruise along the coast to see icebergs, go dog sledding on a glacier, or embark on a wildlife-watching tour for Arctic species.
16. Zambia:
    Zambia offers pristine wilderness areas, including the Zambezi River and its incredible Victoria Falls, as well as diverse national parks. Experience a walking safari in South Luangwa National Park, go canoeing along the Lower Zambezi, or visit Victoria Falls for a unique perspective.
17. Indonesia:
    Indonesia is an archipelago with rich marine biodiversity, lush rainforests, and unique wildlife like orangutans and Komodo dragons. Explore Komodo National Park for Komodo dragons, go diving in Raja Ampat for vibrant coral reefs, or visit Tanjung Puting National Park to see orangutans.
18. Chile:
    Chile boasts diverse landscapes, including the Atacama Desert, Patagonian fjords, and rich marine life along the coast. Visit Torres del Paine National Park for hiking and wildlife, explore the Atacama Desert for stargazing, or go whale-watching in Chiloé.
19. Rwanda:
    Rwanda is known for its lush forests and is a prime destination for gorilla trekking, providing a unique wildlife encounter. Trek in Volcanoes National Park to see mountain gorillas, visit Nyungwe Forest for primate tracking, or go birdwatching in Akagera National Park.
20. Russia (Kamchatka Peninsula):
    The Kamchatka Peninsula in Russia’s Far East is a remote wilderness area known for its volcanoes, hot springs, and diverse wildlife. Explore the Valley of Geysers, go bear-watching in Kurilskoye Lake, or hike around the stunning Mutnovsky and Gorely volcanoes.

All of these offer extraordinary opportunities for nature and wildlife expeditions, each providing a unique blend of landscapes, ecosystems, and incredible wildlife encounters. It is amazing to go into these environments, but you also have a big responsibility to follow guidelines to preserve these remarkable places and the creatures that live in it.