sea turtle: any of various large turtles with limbs modified into flippers; widely distributed in warm seas
turtle: any of various aquatic and land reptiles having a bony shell and flipper-like limbs for swimming
serratia marcescens: the type species of the genus Serratia; a species found in water and soil and milk and foods and insects; can cause infections of the endocardium and blood and wounds and urinary tract and respiratory tract; has been tested as a bioweapon