decreaseC. I do not believe … In the case of whales and barnacles, the barnacles are the ones that derive true benefit from the relationship. What would most likely happen to the whale population if the barnacle population decreased? Barnacles and whales have a symbiotic relationship. stay the same. The symbiotic relationship between a barnacle and a whale is known as commensalism, which describes an inter-species interaction that benefits at least one participant. A commensalistic relationship is one sides but neutral for the other party. Barnacles and whales have a commensalistic relationship in which barnacles benefit. Which term refers to all areas of Earth where life exists? increaseD. View the answer now. View the answer now. Barnacles live on whales but whales are not directly affected by them. Barnacles and whales have a commensalistic relationship in which barnacles benefit. An example of commensalism is the relationship between barnacles and Humpback whales. was asked on May 31 2017. If a deer eats grass, what percentage of energy will the deer acquire from the grass? biosphere. stay the Barnacles and whales have a commensalistic relationship in which barnacles benefit. The barnacles cling on too the whale and are carried to rich feeding grounds (So the barnacles benefit… Answer: In the case of barnacles and whales, barnacles are the species which gets benefited from this relationship as they attach to the belly or back of a whale's body and then feed on the microorganisms while whales are neither befitted nor harmed by this association. The type of symbiotic relationship between barnacles and whale is commensalism as they neither benefit nor harm the whale on which they live. The barnacle gets its food from the whale and the whale is no negatively impacted from its presence. Q&A > Biology > Barnacles and whales have a … View the answer now. the barnacle live only on the whale. become extinctB. 10 percent . was asked on May 31 2017. If the barnacle population decreased, what would most likely happen to the whale population?A. barnalces and whales have a commensalistic relationship in which barnacles benefit.