Tucked alongside the more famous Mariner’s Cave, Fish Cave is a less-talked-about snorkelling site with easier access, no diving required. This open rock cavern off Nuapapu’s northern coast reveals dazzling schools of fish swirling through deep blue waters, offering a surreal snorkelling experience. With dramatic rock formations surrounding the cave, the site delivers on both beauty and adventure, though it’s not sheltered, so sea conditions can be rough. We recommend visiting with a local boat operator for safety and guidance.