Olive ridleys get their name from the coloring of their heart-shaped shell, which starts out grey but becomes olive green once the turtles are adults.

• 橄榄海龟之所以叫这个名字是因为它们心形壳的色彩，它们的壳刚开始是灰色的，但到橄榄海龟成年后就变成橄榄绿。