They come from a group of animals called echinoderms. The echonoderms are included brittle stars,sea cucumbers, sea lillies, sea urchins, and sand dollars. The starfish's mouth is in the middle of the body. Starfishs use tubes for moving, and eating food. It also doesn't have a brain.
Starfish release eggs into the sea from organs that are located in the arms.
The Adelie penguin has 60-70 feathers per square inch. The Adelie penguin head is also black, so is it's beak. It has a white ring around each eye,and it's pupil is black. Christina M., Kensington Elem. The adelie penguin is the best known and the most common of all the penguins that live on the Antarctic continent.