The estimated growth of corals at
Phak Kat bay in February 2007 indicated that corals
(primary branch) could grow at the mean length of
14.25.8 cm while the mean length of whole areas
of Surin Marine National Park was estimated to be
13.45.2 cm. Corals in near shore areas, such as
Lan island, were almost dead and have been covered
with macroalgae and settled particulates for three
years after the tsunami. However, the corals around
Khang Khao island (near shore area) showed slight
signs of recovery in October 2009