What is another example of commensalism besides the whale and barnacles?

Crabs and Shrimps often form commensalistic symbiotic relationships with anemones in tropical waters, again for the purposes of protection from predation. For instance the Anemone crab, Neopetrolisthes oshimai, which is a filter feeding Porcelain crab, lives and captures its food from within the tentacles of giant anemones.

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