Humpback whales (Megaptera novaeangliae) are capital breeders, migrating from high latitude feeding grounds to low latitude breeding areas. Their life history makes them highly vulnerable to global change, as they face varying environmental conditions throughout migration. Firstly, we present research investigating the usage of the Gold Coast Bay by migrating E1 humpback whales. This area, previously recognised as an aggregation site, is being used more frequently for resting and social behaviour, demonstrating that humpback whales can adapt to changing environments by altering their behaviour at such sites. Secondly, occurrences of supplementary feeding events off the south-east coast of Australia have been documented over the past several years. Again, this suggests a behavioural modification in response to climate variability, switching to a feeding behaviour before reaching their feeding grounds. This warrants further research, and we present our upcoming study to understand the role of supplementary feeding in this population of humpback whales. We aim to identify the cohorts that are undertaking opportunistic feeding and understand how changing predator-prey relationships can influence nutrient cycles. Specifically, we intended to collect and analyse faecal samples to assess the quantity and quality of these animal’s diets and the nutrient cycling occurring in this environment.