The MSc International Marine Science (Online Distance Learning) from Heriot‑Watt University Online is a flexible and globally relevant postgraduate programme that equips learners with advanced scientific knowledge, analytical skills and practical insight needed to understand, manage and protect marine ecosystems in the context of pressing environmental challenges such as climate change, biodiversity loss and sustainable resource use. Delivered fully online with self‑paced study that can be tailored around work and personal commitments, the programme integrates interdisciplinary subjects including oceanography, marine ecology, environmental policy, GIS for marine and environmental scientists and applied research design, allowing students to build expertise in both the scientific and policy dimensions of marine environments. Students complete a series of taught courses followed by a dissertation that develops high‑level research capability and scientific communication skills, preparing graduates to pursue careers in marine conservation, environmental consultancy, policy advising, oceanographic research and related fields where deep understanding of global marine systems is essential. Taught by active researchers and supported by industry‑relevant insights, this MSc enables learners to apply cutting‑edge marine science concepts to real‑world challenges and contribute meaningfully to the stewardship and sustainable management of the world’s oceans.