Although there have been no formal scientific research surveys conducted through Haiti Ocean Project to assess marine mammals that exist in Haiti waters to date, we have preliminary sightings data that suggest a variety of species of whales and dolphins reside in the waters off the coast of Haiti. Three field surveys conducted to date in the Gulf of Gonave, Haiti, have documented the presence of sperm whales (Physeter macrocephalus) and dwarf sperm whales (Kogia simus), as well as three species of dolphins: bottlenose (Tursiops truncatus), pantropical spotted (Stenella attenuata), and short-finned pilot whales (Globicephala macrorhyncus). A female humpback whale (Megaptera novaeangliae) tagged in the Marine Mammal Sanctuary of the Dominican Republic was observed to travel west into Haitian waters, the first record of this species there. This proof is based on sightings from the authors who live in, and travel to, Haiti on a regular basis and from fishermen and boaters in Haitian waters. We are hopeful that these preliminary sightings data will inspire graduate students and other researchers to travel to our project location to conduct more formal research while supporting a marine discovery center, whale and dolphin watching, educational outreach and other Haiti Ocean Project elements underway. Informal field surveys were conducted on: February 2009, June 2009, June 2010, September 2010, December 2010 and March 2011.