China appears in our catalog as Hainan, its only tropical island province, and that is the whole of our coverage: the mainland coast, Hong Kong, Macau and the country's other seas are not in this guide. What we cover is the south of the island — Wuzhizhou Island in Haitang Bay off Sanya, with the most intact coral we could find described on the island and the east-side Coral Garden in the shallows; Fenjiezhou (Boundary) Island near Lingshui, quieter and about 40 minutes from Sanya; and Yalong Bay Underwater World, Sanya's earliest dive base and the most resort-convenient snorkel, at honest lower visibility. Two facts belong on the page rather than in a footnote. The first is entry: Hainan runs its own 30-day visa-free policy for a published list of nationalities, which covers this province and not the mainland — onward travel to mainland China needs a regular Chinese tourist visa, and the list is set by the Chinese authorities and changes. The second is practical: roughly June to September is typhoon season, when seas can roughen for days and the island ferries stop running, and most Western apps are blocked inside China, so connectivity is sorted before departure rather than in Sanya.
What we cover — and what we don’t
Where we cover China: Hainan only — the island province's southern coast around Sanya, with Wuzhizhou Island in Haitang Bay, Fenjiezhou (Boundary) Island at Lingshui and the Yalong Bay Underwater World, as one destination with three sites. That is a deliberate limit: the Chinese mainland, Hong Kong, Macau and the country's other coasts and seas are not in this catalog. Two framing points belong here rather than only on the destination page. First, the entry rules are provincial — Hainan runs its own visa-free stay for a published list of nationalities, it covers Hainan and not the mainland, and the list changes, so check your own passport with a Chinese embassy before you book. Second, the island's limits are weather and connectivity: typhoon season can cancel ferries for days, and the Great Firewall blocks most Western apps, so a VPN or a roaming eSIM and offline maps are sorted before departure. Nothing here is a safety, security or immigration assessment — check your own government's current position before you plan.
In catalog rank order. Rank, taglines and “best for” notes are the catalog’s own; each destination page and guide goes deeper.
37Hainan, China
China's tropical island
Coral gardens · Visa-free islandChina's only tropical island province — coral gardens in bath-warm water, a day trip from Sanya, and a 30-day visa-free entry.
Hainan is China's only tropical island province, and the snorkeling is genuinely good rather than merely good for China. Wuzhizhou Island's coral gardens sit in bath-warm water that clears toward the top of its range on the best days, the island is an easy day trip from Sanya, and a 30-day visa-free policy makes this one of the most accessible corners of the country for foreign visitors. The honest caveats are weather and connectivity: typhoon season runs roughly June to September, when the island ferries can stop running, and the Great Firewall means you should sort a VPN or a roaming eSIM before you fly.
