These living creatures are a manufactured product.
Interactive aquarium full of bioluminescent plankton called dinoflaggelates ("dinos"). The plankton illuminates the dinosaur-shaped environment when you gently shake it. Just let them bask in indirect (Tech Gifts Dorm Room)
Sea-Monkeys are probably the easiest pets you can ever own, and they were probably the first pet I ever had. This article tells you more about Sea Monkeys and where to buy them.