A woman trying to rid Aotearoa of plastic pollution is backing the crackdown on single-use plastics.
Polystyrene containers and packaging will be replaced with recyclable alternatives.
Officials called the find a "stunning, fascinating, briefly alarming and shameful" discovery.
However it has recommended some changes for future drops.
"They need practical information about what steps to take."
The sounds could be heard by animals or insects coming within five metres of the plants.
Scientists discovered a range of plastics.
The World Wildlife Fund has denied receiving a donation from DiCaprio
The new facility hopes to look after 150 eggs per year.