Foto 3 (IMAGE)

Aarhus University

Foto 3

Caption

A string with listening buoys is ready to be deployed in the sea. The bag, which is made of biodegradable hessian, is full of pebbles and serves as an anchor. From the surface, the researchers can acoustically release a hook to the anchors, bringing the recorders to the surface while the bags remain on the seabed where they dissolve.

Credit

Photo: Karin Clausen.

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