The Guaymoreto Wildlife Refuge, covering more than 7,000 hectares, surrounds a broad lagoon formed by the Cabo de Honduras [1], east of Trujillo [2]. The lagoon, canals, mangrove swamps, and a small island are excellent bird- and monkey-viewing areas.
Local fishermen reputedly have organized an ad-hoc organization to take visitors on tours of the lagoon in cayucos (canoes), charging US$20 for up to four people for a three-hour tour, while more formal tours can be arranged through Tourist Options (www.hondurastouristoptions.com [3]).
Links:
[1] http://www.moon.com/destinations/honduras
[2] http://www.moon.com/destinations/honduras/the-north-coast/trujillo
[3] http://www.hondurastouristoptions.com