While the multi-billion dollar offshore industry provides professional divers union coverage, top pay and safety conditions, onshore diving and recreational diving are another story.  In the ocean depths divers work among sharks every day. But for many it's not the finned variety that they need to look out for in this dark & dangerous world where some of the worst employers lurk. The MUA covers hundreds of professional divers working on construction sites on the shores of our capital cities, in fish farms, on the Great Barrier Reef dive tours and below offshore oil and gas facilities in the Timor Sea, Northwest Shelf and Bass Strait.