Green sea turtleChelonia mydas TOTAL LENGTH Up to 1.5 m / 5 ft COLOUR Dark greyish green with light blotches on shell FEATURES Shell tapered at rear; small head relative to body; four costal (side) plates (see on diagram) Related ArticlesPacific white-sided dolphinMinke whaleLeatherback sea turtleOlive ridley turtleLoggerhead turtle