* Sea anemones: Hermit crabs often carry sea anemones on their shells. The anemones provide protection from predators with their stinging tentacles, and the crab receives a safe haven from the anemone's stinging cells. This is an example of mutualism, where both organisms benefit.
* Small fish: Some small fish, like gobies, will live in the shells of hermit crabs. The fish benefit from the protection of the crab's shell, while the crab may benefit from the fish's ability to clean its shell or alert it to danger. This is also an example of mutualism.
* Other invertebrates: Hermit crabs can also be found living with other invertebrates, such as barnacles or snails. These relationships can be commensalism, where one organism benefits (the barnacle or snail) and the other is neither harmed nor helped (the hermit crab).
It's important to note that the specific symbiosis depends on the species of hermit crab and the environment it lives in.