Data.

This dataset was collected by Citizen Scientists at an official 'Survey Area' as part of the Litter Intelligence long-term litter monitoring programme. The data are freely and openly accessible to anyone. Download the raw data, share this survey, and learn more about the data collection methodology through the links at the bottom of the page.

Litter Survey

beach-icon Beach.

Māngere Lagoon Rock Wall, Manukau Harbour

21 August 2025

Watercare

Helen Adams-Blackburn

Overview

B

3

1.0

0.9

50m x 4m

Rock Rubble

Items per 1,000m2

530

Products

106

3581

Type Count Weight (g)
Plastic 81 791
Resin pellets A N/A
Cigarette lighters 1 18
Food wrappers 6 2
Unidentifiable hard plastic fragments 55 13
Safety & construction related 2 641
Strapping bands & tape 1 2
Food containers 1 6
Plastic sheeting 1 9
Other Plastic 1 2
Cable ties & zip ties 2 1
Bottle caps & lids 5 5
Cosmetics and medical packaging 4 6
Bottles <= 2 L 2 86
Glass & Ceramic 9 126
Glass or ceramic fragments 9 126
Foamed Plastic 6 3
Polystyrene insulation or packaging 5 2
Ear plugs 1 1
Wood 5 2447
Processed timber & pallet crates 5 2447
Metal 3 27
Aluminium drink cans 1 15
Construction material 1 11
Metal Bottle caps, lids & pull tabs 1 1
Fabric & Textiles 2 187
Clothing, towels and linen 2 187

Materials

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  • If you would like to learn how this data was collected. Our Methodology