Frederique Olivier / Agitated Southern elephant seals (Mirounga leonina) fighting in a wallow before settling down, Macquarie Island, Sub-Antarctic Australia.

David Woodfall / Kevin Whales, man with litter he has picked from street and sorted for recycling. Jaywick, Essex, England, UK.

David Woodfall / Kevin Whales, man with litter he has picked from street and sorted for recycling. Jaywick, Essex, England, UK.

Pat Tuson / Empty glass jars in basket washed and ready for reuse, storage or recycling. London UK, January 2017,

Pat Tuson / Two empty glass milk bottles on step, Holloway, London Borough of Islington England, UK

Pat Tuson / Shopping in reusable cotton bags on kitchen table, Holloway, London Borough of Islington

Pat Tuson / Reusable cotton bags on kitchen table, with images and text promoting 'reduce reuse recycle' Holloway, London Borough of Islington

Pat Tuson / Five empty glass milk bottles on doorstep, Highbury, London Borough of Islington England UK

Pat Tuson / Five empty glass milk bottles on doorstep, Highbury, London Borough of Islington, England, UK

Pat Tuson / Emply glass reusable milk bottles in crate on doorstep, Highbury, London Borough of Islington England UK

Pat Tuson / Household goods left on pavement outside house for recycling, London Borough of Islington, UK

Pat Tuson / Man holding reusable cotton bag, London UK

Pat Tuson / Bright Sparks sign, Islington Repair and Reuse Shop for small electrical items, London UK