A will to reduce the use of plastics and a listless goldfish swimming at the bottom of a fish tank prompted winning projects in this year's Hawke's Bay Science and Technology Fair.
The top two projects were entered by students from Hastings Girls' High School.
Taking part in the EIT-sponsored fair for the first time, Year 9 students Amanda Philpott and Caitlin Stent teamed up for their EIT Science and Technology Award-winning project Bottle to Blob: Edible Plastic.
Keenly aware that plastic is polluting the environment, Amanda learned about a cooking process called spherification online. She and Caitlin looked at adapting the method for shaping a liquid into spheres to make edible and biodegradable bottles.
"We didn't get exactly what we wanted," said Caitlin, "but we did demonstrate the possibilities for replacing plastic bottles."