Дайв-сайты: Penghu County

The Blue Cave itself on Xiji Islet is primarily viewed from boats, as there are currently no wharf facilities to land on the islet. However, snorkelling and diving in the surrounding waters of the South Penghu Marine National Park is permitted and popular. The cave is best experienced by boat tour, where you can see the stunning blue light effect created by sunlight refracting through the sea cave entrance. Nearby dive sites offer excellent underwater exploration among the basalt formations.

The South Penghu Marine National Park protects vast fields of purple staghorn coral that are rare elsewhere in Taiwan and the broader region. These corals create a striking lavender-coloured underwater landscape that is particularly photogenic. The protected status of the marine park has allowed these coral formations to flourish in shallow, well-lit water. Snorkelling above the purple coral fields is one of the most popular activities in the Penghu Islands.

The best diving conditions in Penghu occur from April through September, when water temperatures range from 24 to 28 degrees Celsius and the notorious northeast monsoon winds subside. The winter months from October to March bring strong winds that can make boat trips uncomfortable or impossible, and many dive operations reduce their schedules. June through August offers the warmest water and longest days, though summer typhoons can occasionally disrupt plans.