Invertebrates are animals without a backbone or spinal column.
Shrimp: Shrimp have 8 pairs of legs 5 for swimming and 3 for feeding. Also 2 pairs of antennas they use for tasting and smelling to find their food.
Starfish: On the bottom of the starfish it has small tube feet to help with moving and feeding. Also the starfish has 2 stomachs in its mouth!
Worms: The ribbon worm can grow up to 100 feet in length! Also there is a worm called a parasite. It lives in the human body.