| Burren Hill Walks - Ireland: Guided walks in the Burren region of Ireland on geology , botany and archaeology. |
| Butterflies of Kerala: Travel agency highlights tours and excursions to see the butterflies and variety of species in Kerala, India. Photos and description of itinerary available. |
| Diamantina Outback Tours: Offers expeditions based on natural history to remote regions of Outback Australia. Details of tours, booking, information on the Outback. |
| Eclipse Tours: Solar eclipse tours to the next total solar eclipse, also includes tour packages for the Leonid Meteor Showers. |
| Global Expeditions: Expeditions to foster exploration, conservation, community and medical aid in remote areas, led by John Blashford-Snell of Scientific Exploration Society. |
| Kayenta Scientific Investigations: Information about geoscience tours in the Western United States. |
| Parawild Safaris: Works with professional game capture specialists in South Africa. Visitors can have an hands-on, educational experience while being a part of wildlife conservation in action. Also offers traditional wildlife viewing, cultural safaris, and adventure tourism. |
| Phylum Tours: Phylum Tours leads individuals and groups to the remote and beautiful regions of Madagascar with customized tour packages focusing on natural history. Tours, testimonials. |
| Raymond Wiggers, Guide and Educator: Professor conducts geology and botany tours. Site has links to free geology and botany information, details about past and upcoming expeditions, and photo galleries. |
| Reef and Rainforest Tours: ATOL-bonded tour operator features natural history itineraries, tailor-made and small group trips also available. |
| Sahara Overland: Paleontological, geological, and off road field expeditions in Morocco. Order information on fossils available. |
| Scientific Expeditions to Patagonia Organized by University of Connecticut: Groundbreaking ecological research at Torres del Paine National Park, Magallanes, Chile. Details about past and future expeditions. |
| The Orchids of Cyprus: Information about planning a self-guided trip to Cyprus to see the native orchids, and recommends a new book on the subject. |
| Volcano Live: Provides information about volcanoes, eruption, and volcano treks, and links to other volcano educational sites. Includes links to volcano-cams. |
| Watershed Belize Field Course: Describes watershed field course designed to experience travel through a tropical watershed in Belize; a journey from the Maya Mountains rainforest to the Barrier Reef. |
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