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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.

Porirua Harbour - Paremata Bridge

11 February 2023

Friends of Mana Island

Rosemary McCarthy

Overview

C

8

10.5

12.7

30m x 9m

Mixed Substrate

Items per 1,000m2

8785

Products

2372

6913

Type Count Weight (g)
Plastic 1965 1216
Safety & construction related 2 49
Fishing gear 4 13
Fishing line 14 25
Bacterial habitat wheels 3 1
Plastic bags 40 93
Food containers 38 82
Strapping bands & tape 6 3
Lollipop sticks 41 14
Cable ties & zip ties 9 1
Food wrappers 277 81
Unidentifiable soft plastic fragments 522 78
Straws 68 29
Gardening & farming related 24 61
Unidentifiable hard plastic fragments 499 263
Plastic utensils 4 23
Other Plastic 2 6
Bottle caps & lids 128 179
Toys, sport, & recreation (Plastic) 35 55
Pens & Stationery 13 20
Clothes pegs 7 12
Bottle seals & tabs 40 13
Plastic sheeting 3 4
Bottle neck rings 37 14
Cigarettes, butts & filters 10 1
Hangers & retail packaging 94 57
Rope 45 39
Resin pellets D N/A
Glass & Ceramic 255 1107
Glass or ceramic fragments 66 252
Construction material 189 855
Foamed Plastic 52 109
Toys, Sports & Recreation (Foamed Plastic) 2 88
Polystyrene cups or food packs 1 3
Unidentifiable foamed plastic fragments 11 10
Ear plugs 1 1
Foam glazier spacers 2 1
Polystyrene insulation or packaging 35 6
Other 35 18
Personal care items 23 18
Sanitary items 12 N/A
Wood 25 4150
Processed timber & pallet crates 25 4150
Metal 15 78
Construction material 4 60
Metal Bottle caps, lids & pull tabs 2 3
Foil wrappers 9 15
Paper & Cardboard 13 27
Fireworks 12 15
Cups, food trays & wrappers 1 12
Rubber 11 162
Toys, Sports & Recreation (Rubber) 8 10
Rubber bands 1 1
Rubber footwear 2 151
Fabric & Textiles 1 46
Clothing, towels and linen 1 46

Materials

  • Would you like to analyse the data yourself?
  • Or share if you think this data would be interesting to others.
  • If you would like to learn how this data was collected. Our Methodology

Previous survey in this area

Porirua Harbour - Paremata Bridge Friends of Mana Island
02 Oct, 2022
Items per 1,000m2
7030
87%

Next survey in this area

Porirua Harbour - Paremata Bridge Friends of Mana Island
13 May, 2023
Items per 1,000m2
3763
74%