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
HMS Skipjack (1889) Squadron in 1907. In 1909 she was converted to a minesweeper, a conversion that resulted in her torpedo tubes being removed. On 8 October 1910 "Skipjack" arrested the French trawler "G599", which had been caught fishing within British territorial waters in the Thames estuary. The skipper of the trawler was fined five guineas for the offence. In January 1911 "Skipjack" completed a refit at Chatham and returned to fishery protection duties in the North Sea. On the outbreak of the First World War "Skipjack" joined the newly established Grand Fleet at Scapa Flow in the Orkneys. In August 1914, the