What is the symbiotic relationship between egrets and hippos?

Egrets and hippos share a mutualistic symbiotic relationship where egrets benefit by feeding on insects and parasites found on the hippos' skin, while the hippos enjoy a degree of pest control and relief from irritation. This relationship allows egrets to access a steady food source without harming the hippos. Additionally, the presence of egrets can alert hippos to potential threats, enhancing their overall safety. Overall, both species gain advantages that contribute to their well-being.