Barnacles on whales refer to a type of marine crustacean that attach themselves to the skin of large marine animals, particularly whales. This relationship is an example of commensalism, where barnacles benefit from being transported to various feeding areas without harming or significantly affecting the whale's health. The presence of barnacles can indicate the health and age of a whale, as well as its migratory patterns, while also demonstrating the complexities of marine ecosystems.
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