Islanders are being invited to take part in the Big Channel Islands Beach Clean.
People in Jersey, Guernsey, Alderney and Sark are being encouraged to help with the clean-up.
Each island has a number of beach cleaning activities planned across the weekend.
SATURDAY 9 MARCH
10am - L'Etacq, Jersey
10am - La Mare, Jersey
11am - Long Beach/Hungry Whale, Jersey
11am - L'Islet Kiosk, Guernsey
11am - Sark School, Sark
SUNDAY 10 MARCH
10am - Ouaisne Bay, Jersey
10am - Bel Royal/Kiosk, Jersey
11am - Seymour Slipway, Jersey
2pm - Clonque/Platte Saline, Alderney
Islanders can also independently clean a beach of their choice.
Those who choose to do so are being asked to log their findings by making a note of the date and name of the beach cleaned, any interesting finds, how many people participated, the weight of what was collected in kg, and a photograph of the haul.
Organisers say they want to ensure our beaches are a safer and cleaner place for all users.

More fruit on the menu for Jersey primary schools
Consultation opens on Assisted Dying standards
More reports of young people exploring derelict buildings
Haute Vallée installs security fencing after knife incident
Haut Du Mont trial: Safety Officer ‘would’ve stopped the job’ if told truth about test
Health authorities to consider 'cot cams' recommendation
Warning issued over smart glasses use
World Cup qualification target part of new Jersey Cricket strategy