Private speedboat snorkeling to Half-Moon Reef and Coral Mountain with OnBird

What is this tour like?

This is OnBird's private version: the whole speedboat for your group, going to Half-Moon Reef and Coral Mountain in the south. You are picked up in Dương Đông town and driven to An Thoi town, where the boat waits. The trip lasts five to six hours and the departure time follows OnBird's internal water-condition forecasts.

The unit here differs from OnBird's shared tours, and the difference matters. The shop window shows the same '/ group' label, but the price table is not linear: 5,900,000 VND for one guest, 6,500,000 for two, and so on up to 14,450,000 for twelve. The second guest adds 600,000, not another 5,900,000 — this is a boat price with a headcount grid, and the trip type on the page is stated as private charter. Included are safety procedures based on OnBird's forecasts, hotel pick-up and drop-off by air-conditioned transfer, the private speedboat, English-speaking snorkeling and diving instructors who guide participants in the water, high-quality sanitised gear including prescription masks, flotation devices and life jackets, cold water with an icebox on board, and fresh fruit and juice on a beach chair at the last stop. VAT, pick-up surcharges from outlying areas, a fuel surcharge of 300,000 VND per tour payable in cash to the guide for all private pick-ups and drop-offs, and a public-holiday surcharge are not included. The operator advises against participation for people with high blood pressure, heart conditions, epilepsy or severe asthma, for pregnant women and for guests over 65, and points families with children to its dedicated family snorkeling trip. Tours run all year, unaffected by the rainy season, per the operator. OnBird holds 5.0 on Google from 1,508 reviews as of 4 September 2026.