Nicaraguans call the Lake or (literally Sweet Sea; in Spanish, freshwater is ). It is the nation's largest source of freshwater. The lake has sizeable waves driven by the easterly winds blowing west to the Pacific Ocean. The lake holds Ometepe and Zapatera, which are both volcanic islands, as well as the archipelago of the Solentiname Islands. The lake has a reputation for periodically powerful, unnavigable storms.