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Eco-photos of the week: Sept. 4-10

A starfish sits amongst black sand on the beach of the coast city of Qingdao, China on Sept. 6.

Photo: ZUMA Press

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Black sand beach

A starfish stands out against black sand on the beach of Qingdao, China, on Sept. 6. The sand recently washed up on the shore, sparking questions about its origins.

Experts have denied the connection between the black sand and oil, saying that the black materials might be coal ash sunken under the sea that were brought to the beach by the tide.