The foraging strategies of marine predators influence both feeding and reproductive success of an individual, and are determined by multiple factors. In southeast Tasmania, two seabird species, the short-tailed shearwater (Ardenna tenuirostris) and the little penguin (Eudyptula minor), breed in overlapping colonies, but have vastly different requirements for foraging trips. This study aimed to dissect how the two contrasting trip purposes lead to different use of local marine resources, with a focus on vertical resource partitioning. Fieldwork was conducted on Wedge Island, Tasmania, across four consecutive austral breeding seasons (2019/2020 – 2022/2023). Using expectation maximisation clustering analyses, the underwater movements of the two species were identified, with the spatial overlap of foraging efforts quantified. Little penguin dives were more frequent, deeper, and longer than short-tailed shearwaters dives. Within a dive, short-tailed shearwaters had five distinct underwater behaviours while little penguins only had three. Overall, little penguins implemented consistent foraging strategies between individuals, whereas short-tailed shearwaters showed more variability in their foraging strategies, utilising different types of dives across a larger region. From this, we saw how species-specific strategies for exploiting marine resources can facilitate cohabitation and deepened our understanding on how trip purpose can dictate the at-sea behaviour of seabirds.