Algae at Olympic sailing venue, Qingdao

Algae on the coastline of Qingdao Photograph: AP

Workers set up a bridge to transport the algae Photograph: Wu Hong/EPA

Chinese workers remove the bright green algae that has smothered beaches and extended out several hundred metres into the Yellow Sea off Qingdao Photograph: AFP

Heavy machinery has been used to clear the beaches Photograph: AFP

A truck unloads algae from a beach at a temporary dump near a beach in Qingdao city Photograph: Wu Hong/EPA

Tourists walk over the algae at a swimming beach in Qingdao Photograph: Wu Hong/EPA

A man wades through the algae at a beach Photograph: AP

Chinese fishing boats have cleared 100,000 tonnes of algae Photograph: EPA

Windsurfers sail clear of the alage Photograph: AP

Sailing boats from the Netherlands and Finland sailing nearby floating algae at the regatta venue Photograph: Wu Hong/EPA

Swimmers wade through the algae Photograph: AP