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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

13 May 2023

Friends of Mana Island

Margriet Lynch

Overview

C

6

6.0

8.0

30m x 9m

Mixed Substrate

Items per 1,000m2

3763

Products

1016

4520

Type Count Weight (g)
Plastic 720 735
Resin pellets A N/A
Bottle seals & tabs 12 4
Bottle neck rings 11 3
Clothes pegs 1 3
Bottle caps & lids 40 59
Plastic vehicle parts 1 5
Other Plastic 1 8
Food wrappers 200 89
Unidentifiable hard plastic fragments 210 156
Plastic bags 11 39
Straws 21 13
Rope 19 87
Lollipop sticks 17 7
Bottles <= 2 L 2 64
Cigarette lighters 3 43
Pens & Stationery 6 8
Food containers 6 13
Gardening & farming related 17 22
Unidentifiable soft plastic fragments 114 21
Shotgun wadding & shells 3 10
Fishing gear 4 45
Fishing line 4 6
Hangers & retail packaging 7 5
Gloves 2 15
Toys, sport, & recreation (Plastic) 6 6
Plastic sheeting 2 4
Glass & Ceramic 208 666
Glass or ceramic fragments 64 195
Construction material 144 471
Other 31 32
Cotton buds 17 3
Personal care items 7 29
Sanitary items 7 N/A
Foamed Plastic 27 866
Other Foamed Plastic 7 850
Foam glazier spacers 1 1
Polystyrene insulation or packaging 18 13
Ear plugs 1 2
Wood 18 2013
Wooden utensils 1 3
Processed timber & pallet crates 17 2010
Rubber 8 119
Rubber footwear 1 105
Unidentifiable rubber fragments 7 14
Metal 3 8
Unidentifiable metal fragments 1 7
Foil wrappers 2 1
Fabric & Textiles 1 81
Clothing, towels and linen 1 81

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
11 Feb, 2023
Items per 1,000m2
8785
85%

Next survey in this area

Porirua Harbour - Paremata Bridge Friends of Mana Island
26 Aug, 2023
Items per 1,000m2
3256
51%