Rich Coast Diving
- PADI certified courses based at Playas del Coco. Includes detailed rates for dive trips, equipment rental, sailboat excursions. Also offers full vacation packages with choice of lodging and land excursions.
- http://www.richcoastdiving.com

Resort Divers de Costa Rica
- Scuba expeditions with dive sites throughout the Guanacaste coast, equipment, PADI courses, choice of hotels. Also offers sailing and fishing tours, jet ski and ATV rentals.
- http://www.resortdivers-cr.com

Costa Rica Diving
- Specialty instructors with a focus on marine biology, boat trips and equipment, based at Flamingo with diving throughout Guanacaste. Photos and description of dive spots, guestrooms.
- http://www.costarica-diving.com

Undersea Hunter
- Diving trips to the Cocos Islands. Diving vessel highlights and booking information.
- http://www.underseahunter.com

Drake Bay Wilderness Resort
- Scuba diving at Canas Island Biological Preserve. See photos, activities and make a reservation.
- http://www.drakebay.com/

Tamarindo Dive Center
- Full service diving center with PADI, SSI certification courses and snorkeling tours.
- http://tamarindo-diving.8k.com/

Bill Beard's Costa Rica
- Scuba diving and adventure tour packages from the N.W. Pacific coast. List of specials, prices and dive sites.
- http://www.billbeardcostarica.com/

Certifiable Kicks
- Learn to scuba dive on your vacation and experience an underwater tropical odyssey. Article by Cocori.
- http://www.cocori.com/library/travl/diving.htm

Cano Island Scuba Diving
- Drake's Bay scuba diving operator on the Osa Peninsula. Description of accommodations, dive sites and dive center.
- http://www.aguiladeosa.com/

Mystic Dive Center
- Scuba diving and snorkeling at Canas Island and Ballena National Park. PADI instructors offering certification courses.
- http://www.mysticdivecenter.com