Make your way to Tuan Chau Marina for an 11:30am or 2:30pm departure, and board a fixed-wing seaplane that seats up to 12 people. Take off from the water, rising over Halong Bay and heading for the islands. Keep your camera at the ready throughout the trip, as aerial photographs are the best way to capture the grand scale of Halong Bay, and the vast number of islands and rock formations that define the Gulf of Tonkin coast. You’ll see Dau Be Island, whose sheer cliffs are a destination for rock climbers and adventurers, then fly past Cong Do Island, where the sinuous coastline shelters hidden lagoons. Pass over Bo Hon Island, and try to spot the caves and grottoes that pock the island’s water-eroded rock formations. After 25 minutes of flight time, touch back down at Tuan Chau Marina, where this tour concludes. Dau Be Island: Located in the southeast of Halong Bay, 500 metres to the east, from the Bai Chay Tourist Wharf about 28 km, in a gland located in the outer archipelago of Ha Long Bay (Lan Ha Bay estuary), standing between Tra Ngu islands and Da Le Island. Cong Do island: On the south-east side of Ha Long Bay, about 25 km from Bai Cháy Wharf, Cong Do is in Bai Tu Long Bay in the region which recognised as the World Heritage. It has an area of 23,363 sq. m and its mountain reach a peak of 172 m. The island features many lagoons, which are the residence of numerous species of sea-life, such as shrimp, crab, fish, squid, and aquatic plants. Bo Hon island: Bo Hon Island or Soap-Berry Tree Island, not only because of its splendid scenery but also as it is one of the largest in the area. There are many grottoes located here, such as the Surprise, Luon, Virgin and Male grottoes. There is also a concentration of high mountains with vertical cliffs like citadel wall; mountains follow closely make a huge beautiful watercolour picture on the sea.