Eclipse Tours 
Solar eclipse tours to the next total solar eclipse, also includes tour packages for the Leonid Meteor Showers.
http://www.eclipsetours.comSahara Overland 
Paleontological, geological, and off road field expeditions in Morocco. Order information on fossils available.
http://www.saharaoverland.com/
Diamantina Outback Tours 
Offers expeditions based on natural history to remote regions of Outback Australia. Details of tours, booking, information on the Outback.
http://www.diamantina-tour.com.au
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.
http://www.butterflieskerala.com
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.
http://www.watershedbelize.org
Global Expeditions 
Expeditions to foster exploration, conservation, community and medical aid in remote areas, led by John Blashford-Snell of Scientific Exploration Society.
http://www.ses-explore.org
Burren Hill Walks - Ireland 
Guided walks in the Burren region of Ireland on geology , botany and archaeology.
http://homepage.eircom.net/~burrenhillwalks
Volcano Live 
Provides information about volcanoes, eruption, and volcano treks, and links to other volcano educational sites. Includes links to volcano-cams.
http://www.volcanolive.com
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.
http://www.parawild.co.za/
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.
http://www.cyprus-orchids.freeservers.com/
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.
http://raymondwiggers.homestead.com/
Reef and Rainforest Tours 
ATOL-bonded tour operator features natural history itineraries, tailor-made and small group trips also available.
http://www.reefandrainforest.co.uk/