This paper and the presentation highlight the value of the Yapese fish weirs and how they, and the associated intangible cultural heritage can be used to assist modern-day approaches to marine ecological conservation, in addition to keeping traditional sustainable fishing practices alive. Yap is located 840 km south west of Guam and 1,850 km east-southeast of Manila. It consists of four volcanic islands (referred to as Yap Proper), seven small coralline islands and about 130 atolls forming the ‘Outer Islands’ that cover about 800 km in the north west Pacific Ocean, all of which forms Yap state—one of the four States of the Federated States of Micronesia (FSM). On the reef flat adjacent to the volcanic islands, the Yapese developed a harmonious, sustainable system of fishing that incorporated spiritual, social, cultural and environmental connectivity and awareness. This is of particular importance to the inshore fishery, which is a sensitive region for fish breeding, and needs to be well conserved, maintained and not overfished. The Yapese employed a number of cultural practices (living heritage) related to fishing, and created a number of tangible cultural heritage, and together they form the Yapese maritime cultural landscape. This system employed a number of fish traps and weirs, with the tidal stone-walled fish weirs—aech—surviving to this day. Yap has now four Marine Protected Areas (MPAs). Yapese are aware that fishing is currently not implemented in a sustainable manner and are declaring ‘no catch zones’ in certain marine areas. Many of the studies associated with the need for and development of MPAs are largely science based, with little relevance and benefit given to traditional fishing (cultural practices and the material cultural). Traditional fishing practices using traditional ecological knowledge were carried out sustainably for hundreds of years and the incorporation of this knowledge into MPA management should not be overlooked.