The Edge Adventure Company - Offers scuba diving, sportfishing, kayaking and surfing. - http://theedgeadventure.com/
Guanacaste Outriggers - Based at Sugar Beach, offers kayaking, snorkeling and hiking tours. Includes photos, descriptions and rates. - http://www.guanacasteoutriggers.com/
Samonique III - Sailing cruises on a 52 foot Beaufort yacht in the Flamingo area. Also charters for weddings and parties. - http://www.costarica-sailing.com/