Temperature Measurements from Salmon Sharks,Lamna ditropis,in Alaskan Waters

Salmon sharks, Lamna ditropis, occur only in the North Pacific Ocean. These large sharks can grow to 250 cm total length and weigh 220 kg. They are endothermic, and previous investigators reported red muscle temperatures of 8–11 C above ambient water temperature. We recorded red muscle temperatures up to 15.6 C above ambient, along with additional muscle and organ temperatures.