Age: DURING the two-week voyage from Hobart to the Antarctic ice at Casey station, a team of biologists aboard the ship Aurora Australis were busy fishing for clues about the hidden worlds beneath them. As the ship ploughed south over 2000 kilometres, the four scientists on board trawled the Southern Ocean at various depths, hauling in samples of seawater teeming with a prized catch barely visible to the naked eye. The water samples they have collected and catalogued contain …