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Phuket Diving Guide
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Koh Bon, Koh Tachai and Richelieu Rock By John Williams North of the Similans lies Koh Bon, Koh Tachai, the Surin Islands, and Richelieu Rock. All of these areas offer world-class diving that differs from the Similans and should be part of your itinerary when you visit the area. Koh Bon: The Perforated Island
Twenty-five kilometres north of Koh Bon, Koh Tachai has an offshore underwater ridge that runs perpendicular to the island. This is considered to be one of the finest dives in the Kingdom and is famous as a place to see not only the more common species of corals, fans and tropical fish, but larger animals such as rays, leopard sharks, nurse sharks and hawks bill turtles. Whale sharks make an appearance on a regular basis. Tachai also boasts a breathtaking sandy beach on its northeastern shore; a great place to hang out and feel like Robinson Crusoe.
Surin's ace card, however, is a small submerged rock about 18 kilometres east of Surin. Richelieu Rock, just exposed at the lowest of tides -- thus a navigational hazard for those boats not equipped with a GPS navigation system -- rates as one of the best places in the world for swimming with our gentle giant, the whale shark. Encounters with these fish -- the largest of all fish -- are rare almost any place in the world. But for some reason, Richelieu attracts more than its fair share. Swimming with such a large animal, known to grow to lengths of 20 metres or more, has to be a high point for any diver. Sightings occur 50-70 percent of the time, depending on the time of year. Generally, February, March and April are the best times for a visit. The big difference between diving here and other areas that are famous for whale sharks, such as Western Australia, is that we don't need spotter planes as the sharks cruise around the rock, and the visibility is normally excellent. Who knows why they are here, but the sharks aren't around because of plankton blooms like in Australia. Thus, clear water.
Source: ©Siam Dive n' Sail |
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Koh
Bon is located about 20 kilometres north of island #9 and features
one of the only vertical walls in Thailand. The dive site is on
the southwestern point and consists of a 33 metre wall facing the
small cove, and a step-down ridge that carries on to depths of over
45 metres. Leopard sharks are common on the ridge and on the sandy
flats below the wall. Although the soft corals are not as high-profile
as they are in the Similans, the colours of the corals are radically
different and include shades of turquoise, yellow and blue, besides
the more common pinks and purples. Koh Bon is one of the better
places to see manta rays, especially towards the end of the season
when there is more plankton in the water.
The
Surin Islands, although visited by several dive operators from Phuket,
are more appropriately famous for their beautiful coves, bays and
dense jungle than they are for their diving. Spending a few idyllic
days on a sail boat or other yacht here are the stuff dreams of
paradise are made of yet the serious diver will be bored easily
after a few dives because of the generally poor visibility and lack
of fish.