Responsible for inducing carcinogenicity, cognitive impairment, neurotoxicity, oxidative stress, and other adverse effects, the impact of BPA (bisphenol A) on neurotoxicity and its potential mitigation through natural compounds remain poorly understood. This study aimed to investigate the neurotoxic effects of BPA in zebrafish (Danio rerio) through waterborne exposure, as well as the potential protective effects of ulvan cosupplementation