Marine Sampler

This project focuses on developing a novel marine sampling system that integrates environmental DNA (eDNA) collection with biologging technology to study predator–prey interactions in the deep sea. The overarching aim is to capture real-time evidence of how whales interact with their prey, an ecological process that has never been directly observed due to the extreme depth, pressure, and darkness of these environments. By combining these two previously separate technologies into a single platform, the project represents a first-of-its-kind attempt to generate synchronized biological and behavioural data from deep-diving marine predators.

The prototype marine sampler device sits at the core of this innovation, acting as the physical interface between the animal, the environment, and the data collection system. Designed to be integrated with biologging tags attached to whales, the sampler enables the capture of trace genetic material from surrounding seawater during dives. This allows researchers to identify nearby prey species through eDNA analysis while simultaneously recording the whale’s movement, depth, and behaviour. The device therefore enables precise spatio-temporal correlation between predator actions and prey presence, something that has previously only been inferred indirectly.

Ultimately, the project aims to unlock a new class of ecological data by enabling direct observation of deep-sea food webs. The insights generated could significantly improve understanding of marine biodiversity, predator foraging strategies, and ecosystem dynamics in one of the least explored regions of the planet. Beyond fundamental science, this approach has important implications for conservation, as more accurate data on species interactions can inform management strategies in a rapidly changing and heavily exploited ocean environment. By contributing a working prototype sampler, my work played a critical role in advancing this emerging field and establishing a foundation for future research and technology development.