Dunedin school pupils have been looking to catch plankton, analyse the anatomy of cockles and mussels and monitor the health of water at Karitane.
Science wananga programme co-ordinator Mariana Te Pou said 30 children from three schools took part yesterday.
The marine science activity was part of their role as coastal caretakers yesterday, as they immersed themselves in learning outside the classroom with Te Runaka o Kati Huirapa and the University of Otago science wananga team.
Te Kura Kaupapa Maori o Otepoti pupil Zyanalee McIntosh (10) said racing in her waka was really fun and Dunedin North Intermediate pupil Azaleah Howard (12) said they learnt paddling techniques and fished for plankton.
The programme sought to weave together ancient knowledge from tupuna and Western knowledge and share that among rangatahi Maori, she said.
Scientist Hanna Ravn, one of the organisers, said the children had a lot of knowledge.
Two waka were provided by Karitane Maori Tours.