Galathea National Park was established in 1992 as part of the Great Nicobar Biosphere Reserve. Its creation aimed to protect the unique biodiversity of Great Nicobar Island, which is considered a biodiversity hotspot. The park is named after the Galathea Bay, a prominent feature within its boundaries. The bay itself was named after the Danish expedition ship 'Galathea' which explored the area in the mid-20th century. The park remains largely unexplored due to its remoteness and the presence of indigenous tribes, adding to its mystique and conservation importance.