These sad-looking creatures, which grow up to lengths of 12 inches, live at depths of 900m. They spend most of their time gently floating around waiting for food to pass in front of them, which sounds like quite a nice life to us! Because they live so far from the sea surface they're not often seen by humans. However, increasing levels of deep-sea fishing in Australia and Tasmania for crab and lobster mean that the sulky sea-dwellers are being dragged up with other catches in increasing numbers.