Lumbricus Terrestris
The Lumbricus Terrestris is well known as the Common Earthworm. It is most commonly found throughout Europe and can range from 20 to 25 centimeters in length, in addition, this can be found in in North America and Southeast Asia. The way this animal eats is by eating leaves that are decayed and other plants through its mouth. It can also live for very lengthy periods of time without eating. This organism can dig up to six feet in the Earth. The Lumbricus Terrestris are hermaphrodites where they are both male and female and have both organs. In addition, it is believed that this organism may have possibly evolved from the flatworm, or came from the sea.
The Lumbricus Terrestris has a closed circulatory system, the blood vessels within it help circulate the blood to many organs. The blood within its body also gets recirculated so it can be used multiple times for as much use as possible. It gets its oxygen by absorbing the nearby soil, and this oxygen ends up traveling through the dorsal blood vessels within its body. The lower ventral blood vessels also transports the oxygen, blood, and nutrients to the esophagus in its body.