There are seven different species of sea turtles that live in the world's oceans. On average, an adult loggerhead weighs 120 kilograms, an adult green turtle weighs 150 kilograms, an adult leatherback weighs 400 kilograms, an adult hawksbill weighs 58 kilograms, an adult Kemp's ridley weighs 40.5 kilograms, an adult Olive ridley weighs 50 kilograms, and an adult Australian flatback weighs 90 kilograms. What is the median?
