Important products are copra, tortoiseshell, and "trepang" (an edible sea cucumber). The first USS "Trepang" (SS/AGSS-412) was a "Balao"-class submarine in the United States Navy. Squid, cuttlefish, shrimps, crabs, shellfish and sea cucumber or trepang are plentiful. The collector, or fisher, of "trepang" is a trepanger. One of its major industries is the trepang (sea cucumber) industry. "Trepang", now out of torpedoes, sped back to Pearl Harbor, arriving before Christmas. Raw and prepared cotton, tobacco, trepang, tortoise-shell, coconuts and coconut oil, and salt are exported. During the refueling overhaul "Trepang" completed the test program on-schedule and under budget. Five Japanese trepang fishers were killed by Aboriginal Australians of the Yolngu people. "Trepang" live on the sea floor and are exposed at low tide. In 1987, "Trepang" completed a Mediterranean deployment. Midshipman orientation cruises followed and, in September, "Trepang" conducted pre-deployment work-up and certification. "Trepang" spent the early part of 1976 preparing for an extended cruise.