Based on the search results, I have identified a specific destination for your gap year adventure: the Galápagos Islands in Ecuador. Here is a detailed travel guide with descriptions of what to see and do, along with existing trips on offer and recommended companies to go with.

1. Exploring the Enchanted Islands The Galápagos Islands, a UNESCO World Heritage site, are renowned for their unique wildlife. You can expect to encounter giant tortoises, marine iguanas, and blue-footed boobies. The islands' isolation has led to the evolution of species found nowhere else on Earth. A visit to the Charles Darwin Research Station is a must, where you can learn about conservation efforts and see tortoises up close.

2. Snorkeling with Sea Lions One of the most exhilarating experiences in the Galápagos is snorkeling alongside sea lions and various species of fish. The clear waters offer unparalleled visibility, allowing you to witness the underwater world in vivid detail. You might also encounter hammerhead sharks and manta rays, making for an unforgettable adventure.

3. Hiking the Volcanic Landscapes The islands' volcanic origins provide a dramatic backdrop for hikes. Santa Cruz Island's Sierra Negra Volcano is home to the second-largest caldera in the world. Hiking here offers stunning views and a chance to see the geological history of the islands up close.

4. Wildlife Watching on San Cristóbal Island San Cristóbal is known for its friendly sea lions and the opportunity to spot Galápagos hawks and frigatebirds. A visit to the Interpretation Center provides insights into the island's history and ecosystem. The nearby beach, Playa Mann, is perfect for relaxing after a day of wildlife watching.

5. Diving with Hammerhead Sharks For the adventurous diver, the Galápagos offers the chance to dive with hammerhead sharks. The waters around Wolf and Darwin Islands are particularly renowned for this experience. The nutrient-rich currents attract a variety of marine life, making every dive a new adventure.

6. Kayaking Among the Islands Kayaking is a peaceful way to explore the Galápagos, allowing you to get close to the wildlife without disturbing them. Paddle through the calm waters, keeping an eye out for sea turtles, penguins, and flightless cormorants. The tranquility of gliding through these unique waters is not to be missed.

7. Camping on the Beaches For a true immersive experience, consider camping on the islands' beaches. Wake up to the sound of waves and the sight of sea lions lounging nearby. This is as close to nature as it gets, with the added benefit of falling asleep under a sky full of stars.

8. Photographing the Unique Flora The Galápagos is a photographer's dream, with unique flora that complements the fauna. The Scalesia trees, endemic to the islands, and the bright red sesuvium plant provide a colorful backdrop to your wildlife photos.

9. Sailing the Archipelago A sailing trip around the Galápagos is a classic way to see the islands. Live aboard a yacht or catamaran, and let the crew take you to the best spots for wildlife watching and snorkeling. The experience of sailing among these ancient islands is one you'll never forget.

10. Dining on Fresh Seafood Ecuadorian cuisine is a highlight of any visit to the Galápagos. Fresh seafood, including ceviche and grilled fish, is a staple. Enjoy your meals with a view of the ocean, and try the local passion fruit drink, known as chicha.

Existing Trips and Companies:

• G Adventures offers a 10-day "Galápagos Loop" trip that includes hiking, snorkeling, and wildlife watching. They are known for their small group sizes and sustainable practices. G Adventures
• Intrepid Travel provides a variety of trips, including a family-focused adventure. Their "Galápagos Island Hopping" trip is highly rated. Intrepid Travel
• Galapagos Conservancy also offers educational trips that focus on conservation and learning about the unique ecosystem. Galapagos Conservancy

When planning your trip, consider the season, as different times of the year offer different wildlife experiences. Always book with a reputable company that prioritizes sustainability and conservation to ensure your visit is as eco-friendly as possible. The Galápagos Islands offer a once-in-a-lifetime adventure that will leave you with memories to last a lifetime.

Based on the advanced search results, I have identified a new and unique destination for your gap year adventure: the Socotra Island in Yemen. Here is a detailed travel guide with descriptions of what to see and do, along with existing trips on offer and recommended companies to go with.

1. Exploring the Dragon's Blood Trees Socotra Island is home to the unique Dragon's Blood Tree, which is known for its red sap. The tree's umbrella-like canopy provides a striking contrast to the island's arid landscape. A walk through the forest of these trees is a must, as they are native only to Socotra and offer a surreal experience.

2. Snorkeling in the Clear Waters The island's pristine beaches and clear waters are perfect for snorkeling. Expect to see a variety of marine life, including colorful fish and coral reefs. The island's remote location ensures that the underwater world remains untouched and vibrant.

3. Hiking the Socotra Mountains The Socotra Mountains offer a challenging hike with rewarding views. The terrain is diverse, with canyons, caves, and plateaus to explore. Hiking here is an adventure in itself, as you navigate the rugged landscape and take in the panoramic views of the island.

4. Wildlife Watching on the Island Socotra is a biodiversity hotspot, with many species found nowhere else on Earth. The island is home to the Socotra cormorant, the Socotra starling, and the Socotra sunbird, among others. Birdwatching here is a unique experience, as you spot species that are endemic to the island.

5. Diving with Whale Sharks For the ultimate diving experience, Socotra offers the chance to dive with whale sharks. These gentle giants are often seen in the waters around the island, providing a once-in-a-lifetime opportunity to swim alongside them.

6. Kayaking in the Mangroves Kayaking through the mangroves is a peaceful way to explore the island's waterways. The dense mangrove forests provide a habitat for a variety of wildlife, and kayaking allows you to get up close and personal with the flora and fauna.

7. Camping Under the Stars Camping on Socotra's beaches offers a chance to sleep under the stars and wake up to the sound of the waves. The island's remote location means that light pollution is minimal, making for stunning stargazing opportunities.

8. Photographing the Unique Flora Socotra's flora is as unique as its fauna. The island is home to the Desert Rose, a plant that grows in the harshest conditions. The island's landscapes, with their otherworldly plants, provide a photographer's dream.

9. Surfing the Waves For the adventurous surfer, Socotra's waves offer a challenge. The island's location in the Indian Ocean means that it receives consistent swells, making it a surfer's paradise.

10. Dining on Local Cuisine Yemeni cuisine is a highlight of any visit to Socotra. Fresh seafood, including fish and shellfish, is a staple. Enjoy your meals with a view of the ocean, and try the local coffee, which is known for its unique flavor.

Existing Trips and Companies:

• Socotra Eco Tours offers a variety of trips, including wildlife watching and hiking adventures. They are known for their focus on sustainability and local knowledge. Socotra Eco Tours
• Yemen Trails provides a range of adventure trips, including diving and snorkeling excursions. Their local guides ensure that you get the most out of your visit. Yemen Trails

When planning your trip to Socotra, consider the season, as different times of the year offer different wildlife experiences. Always book with a reputable company that prioritizes sustainability and conservation to ensure your visit is as eco-friendly as possible. Socotra Island offers a unique adventure that will leave you with memories to last a lifetime.