Kids Saving the Rainforest
- A non-profit organization which operates an educational center and reforestation nursery. Includes a kids' page of rainforest puzzles and games, information about donations, and an online catalog of products.
- http://www.kidssavingtherainforest.org/

La Escuela de Idiomas D'Amore
- Founded in 1992, they are the original beach school and campus in Costa Rica. Offers intensive Spanish language courses in a total immersion program. Donates a percentage of tuition to the WWF.
- http://www.edcostarica.com/

Oceans Unlimited
- Offers scuba training and outfitting. Includes description of courses, boat trips, facilities and staff.
- http://www.oceansunlimitedcr.com/

Adventure Manuel Antonio
- Photographs and links for accommodations, real estate, tours and activities in Manuel Antonio, with rates and reservations.
- http://www.adventuremanuelantonio.com/