BANGKOK, Aug. 15 (Xinhua) -- Thirty contestants in a Miss Thailand World 2018 pageant collected garbage on Hua Hin beach on Wednesday.

The environmental conservation activity was organized by Trash Hero non-profit organization for the 30 beauty contestants to collect garbage alongside dozens of local schoolchildren on the world-renowned Hua Hin beach, around 200 km south of Bangkok.

The Miss Thailand World contestants did so in sustained effort to help raise the public awareness of adverse effects of the littering of garbage, particularly plastic waste, on land and in the sea which might otherwise spoil the environment and cause serious perils to aquatic animals, said an official of the organization.

For instance, he said, some aquatic animals might possibly die after they have consumed plastic bags.

Only a dozen out of the 30 beauty contestants, who are currently staying at a seaside hotel in Hua Hin, will qualify for the final round of the Miss Thailand World 2018 pageant which is scheduled to be held at a hotel in Bangkok on September 15.