Rank #76
Total number of UNESCO Intangible Cultural Heritage Lists Marine Sites: 0 (2019)
This description refers to the fact that there are currently no UNESCO Intangible Cultural Heritage Lists Marine Sites. This is according to the 2019 report from UNESCO, which states that there are no such sites listed as part of the Intangible Cultural Heritage Lists. This is in contrast to the World Heritage Sites
From Wikipedia
World Heritage Sites are landmarks and areas with legal protection under an international treaty administered by UNESCO for having cultural, historical, or scientific significance. The sites are judged to contain "cultural and natural heritage around the world considered to be of outstanding value to humanity".