The type of symbiotic relationship where one organism benefits while the other is neither helped nor harmed is called commensalism. In this interaction, one species may gain resources or support, while the other remains unaffected. An example is barnacles adhering to a whale's skin; the barnacles benefit by gaining access to nutrient-rich waters, while the whale remains indifferent to their presence. This type of relationship illustrates the complexity of ecological interactions, where organisms can coexist without significant impact on each other.