Symbiosis can take many forms, but it always involves two different species living in close proximity and interacting with each other. Here are some examples of symbiotic relationships:

* Mutualism: Both species benefit from the interaction. For example, bees pollinate flowers while gathering nectar.

* Commensalism: One species benefits, while the other is neither harmed nor helped. For example, barnacles living on the skin of whales.

* Parasitism: One species benefits, while the other is harmed. For example, tapeworms living in the intestines of humans.

It's important to note that symbiosis can be beneficial, harmful, or neutral for the species involved.