The
best dive season to dive Koh Chang starts from October
/ November to April
The visibility is generally between 5-15 metres
(16-49 feet) and the best sites are situated on the west and
south of Koh Chang which boasts an abundance of brightly coloured,
healthy and unspoiled corals and a great diversity of fish.
There are more than 10 dive sites in Koh chang.
Some
of the dive sites on Koh Chang are:
Hin
Rap, located off the small island of Klo Klum. There
are occasional currents and it's composed of rocky reef
covered in barrel sponges, soft sponges and gorgonians.Many
small reef fish such as fusiliers, gobys and anthias are found
here.
Hin
Luk Bat is very close to Koh Chang is characterised
by it's abundance of healthy soft corals. Several shelves around
this pinnacle provide homes for smaller reef organisms and crustaceans.
The currents are weak and visibility goes to
about 15 metres (49 feet). You may encounter crown of thorns
starfish here.
Koh
Wai reef has a lot of hard corals such as plate and
brain with softer corals deeper down. The depths are between
5-20 metres (16-65 feet) and rays are often encountered here.
Koh
Rang Pinnacles is a series of pinnacles with a coral
shelf at about 15 metres (49 feet). Living here is a
variety of marine life which includes angelfish, parrotfish,
tuna and barracuda.
Koh
Kra is a small rocky islet with a shallow fringing
reef teeming with life. This site is exceptionally shallow not
exceeding 10 metres (33 feet). Shallow coral gardens slope gradually
giving way to a sandy bottom usually harboring rays.
The
Thonburi is a Thai warship sunk by the French navy
in the 1940's. This wreck lies in shallow waters
near the Salak Petch Bay, south of Koh Chang. The visibility
is poor here and there may be strong currents.