A rescue worker of the Puttha Pratheep Foundation, which helped recover the bodies, said nine sets of remains have been found since Dec 1. Five were found in Lang Suan and four in neighbouring Lamae district of Chumphon, he said on condition of anonymity.
The body found on the beach in Lang Suan on Saturday appeared to be a Westerner wearing a diving suit and with an aqualung. He said the rest, including a skeleton found on Sunday, were Asians, possibly Thais.
The body found on Saturday and the skeleton found on Sunday were headless and were found at the same place at Moo 13 in tambon Bang Nam Chued of Lang Suan.
Rescue workers reported the skeleton, believed to be of a male, to Pak Nam Lang Suan police station at 11.30am on Sunday after villagers found it while walking along the beach.
Pol Lt Capt Taweesak Ruksakul, a duty officer of the station, conducted a preliminary report and said the deceased could have been between 25 and 40 years old and had been dead for at least a week.
The remains were handed over to the Puttha Pratheep Foundation to wait for identification.
The foundation official said the remains were later sent to Surat Thani hospital.
The body found on Saturday was wearing a black scuba-diving outfit with an oxygen tank.
The body was found by the same foundation and sent to Pak Nam Lang Suan hospital for autopsy.
Pol Lt Capt Witoon said the deceased was aged between 35 and 50 years old and was 175 centimetres tall. The officer said the body could be a Western male tourist who had died about a week before.
He suggested the man could have been diving in waters off Chumphon or Surat Thani before winds and currents swept him into the district after he died.
The foundation official said the body found on Saturday remained at the foundation while the rest of the remains were sent to other hospitals including Surat Thani. ''Nobody has contacted us about the body found on Saturday,'' the official added.
Some areas in Chumphon have been hit by heavy downpours and high waves in the Gulf of Thailand in recent weeks.
The foundation official said the bad weather conditions could have caused ships or trawlers to sink, leading to the deaths.