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
Skipjack-class submarine Skipjack-class submarine The "Skipjack" class was a class of United States Navy nuclear submarines (SSNs) that entered service in 1959-61. This class was named after its lead boat, . The new class introduced the teardrop hull and the S5W reactor to U.S. nuclear submarines. The "Skipjack"s were the fastest U.S. nuclear submarines until the s, the first of which entered service in 1974. The "Skipjack"s' design was based on the USS "Albacore"'s high-speed hull design. The hull and innovative internal arrangement were similar to the diesel-powered "Barbel" class that were built concurrently. The design of the "Skipjack"s was very different