Greek island clean up begins as plastic bottles and garbage litter seabed

Agalou Laka beach in Alonissos - (istock)

Off the Greek island of Alonissos, volunteer divers are working to clean up the seabed in Europe's largest protected marine park.

Decaying plastic bottles, a discarded tyre, and rusted anchor chains are just some of the items they have pulled from the turquoise waters.