Shipwrecks found in the deep are valuable parts of Ocean Heritage. Thanks to technology, the deep sea (more than 200 m deep) has been reachable by archaeologists for decades. With future threats to Ocean Heritage such as deep sea mining, maritime archaeologists must leverage deep ocean research and visual media to engage the public and dispel myths about the deep sea. There must be interdisciplinary collaboration, particularly in light of the UN Decade of Ocean Science (2021–2030). Proper scientific baseline surveys, including archaeological analysis, are crucial for DSM projects to ensure the protection of Ocean Heritage. Establishing exclusion zones based on site-specific conditions and continuous monitoring are vital measures to safeguard cultural resources from dredging activities.