Skipjack tuna commercial tunas, and its population is considered sustainable against its current consumption. Its fishing is still controversial due to the methodology, with rod and reel or fishery options being promoted as ecologically preferable. Purse seine methods are considered unsustainable by some authorities due to excess bycatch, although bycatch is said to be much reduced if fish aggregation devices are not used. These considerations have led to the availability of canned skipjack marked with the fishing method used to catch it. Skipjack is considered to have "moderate" mercury contamination. As a result, pregnant women are advised against eating large quantities. In
USS Skipjack (SS-184) January and arrived at Port Darwin, Australia, for refit on 14 January. "Skipjack"’s second war patrol, conducted in the Celebes Sea, was uneventful with the exception of an unsuccessful attack on a Japanese aircraft carrier. She returned to Fremantle, Western Australia, on 10 March 1942. On 14 April, "Skipjack" got underway under the command of James W. Coe for her third war patrol, conducted in the Celebes Sea, Sulu Sea, and South China Sea. On 6 May, contact was made with a Japanese cargo ship, and the submarine moved in for the kill. Finding herself almost dead ahead, "Skipjack" fired