Skipjack tuna addition, skipjack's livers were tested globally for tributyltin contamination. TBT is an organotin compound introduced into marine ecosystems through antifouling paint used on ship hulls, and has been determined to be very toxic. About 90% of skipjack tested positive for contamination, especially in Southeast Asia, where regulations of TBT use are less rigorous than in Europe or the US. Skipjack tuna is used extensively in Japanese cuisine, where it is known as . Besides being eaten seared () and raw in sushi and sashimi, it is also smoked and dried to make katsuobushi, the central ingredient in dashi (a common
USS Skipjack (SSN-585) frame. In early 1988, "Skipjack" visited St. Croix, Port Canaveral, Florida, Bermuda, and Halifax Harbour, Nova Scotia; the last two port calls conducted during an exercise. In late April, "Skipjack" departed Groton, traveling to the south. During this underway, sister diesel submarine USS Bonefish (SS-582) experienced a disastrous fire. TV news broadcast reports of the fire with film; however, news studio editors failed to identify the submarine televised. Wives of the Skipjack's crew noticed the sub bore strong resemblance to the "Skipjack", leading many to believe it was the "Skipjack" suffering the casualty. "Skipjack" had a change of command during