The chicken liver sponge has sailed through a test of its ability to filter pollutants in a harbour in Spain’s Costa Brava

In the polluted waters of Marina Palamós on Spain’s Costa Brava, Manuel Maldonado, a sponge biologist, noticed something unusual last month: red starfish had started settling in the area.

Nearly two years earlier, the Spanish National Research Council scientist and his colleagues had begun transplanting sea sponges into the port to study whether they could survive in its polluted waters.

John Fabiano has travelled the globe photographing dogs with jobs – from Italian truffle sniffers and Greenlandic sled dogs to Perla the hotel receptionist in Cologne

Critically endangered New Zealand bird enjoys record breeding season triggered by mass fruiting of native tree, pushing its numbers to 325

The population of the world’s heaviest parrot, the kākāpō, has surpassed 300 birds for the first time in 75 years, after a record breeding season triggered by the mass fruiting of a native New Zealand tree.

Ninety chicks were officially added to the population of the critically endangered birds on 1 September, pushing the total to 325 – a record high since recovery efforts began.

Critically endangered New Zealand bird enjoys record breeding season triggered by mass fruiting of native tree, pushing its numbers to 325

The population of the world’s heaviest parrot, the kākāpō, has surpassed 300 birds for the first time in 75 years, after a record breeding season triggered by the mass fruiting of a native New Zealand tree.

Ninety chicks were officially added to the population of the critically endangered birds on 1 September, pushing the total to 325 – a record high since recovery efforts began.