A group of students gained a much better understanding of the relationship between humans and the environment after taking part in an education programme.
They learned about the food chain and how much the consumption of just one fish could affect the environment and the ecosystem.
The Live A Green Lifestyle programme, initiated by GP Batteries and supported by the Business Environment Council, aimed to raise environmental awareness and promote a green lifestyle among youth.
Activities included a training day, a visit to the Island West Transfer Station and an inter-school drama competition.
On the training day the students, from 50 secondary schools, learned about the impact of human activities on the environment.
Amigo Yeung Pui-man, 17, from St Catharine's School for Girls, Kwun Tong, said: 'I never thought that eating a small thing like a fish would make so much difference.'