Professor Rapp and his colleagues are identifying different species for a wide-ranging project called SponGES. ‘Nowadays a combination of morphological information and DNA has made things a bit easier but it is still a challenging and very time-consuming task,’ said Prof. Telling species apart is tricky too because many have limited distinguishing features. Found at depths of up to 4,000 metres, sponges are hard to access and most cannot handle exposure to air which makes it difficult to conduct lab experiments. ‘Given their huge filtering capacity and their pronounced role in pumping and cleaning the ocean, sponge grounds have an effect on ocean health,’ said Professor Hans Tore Rapp from the University of Bergen in Norway.īut studying sponges is not easy. But they are an important component of their ecosystems.
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