Triops Play Park Science Kit Contains three very different species of Triops. Not available anywhere else Large domed prehistoric play park tank (over 18 inches long) Tank Decor: Dinosaur slide, prehistoric tank backdrop, tree with vine, glow in the dark dinosaur bone, floating lily pad, raft, and dinosaur egg All new food and conditioners makes growing Triops easy. Just add water and place in bright light Hatch, grow, observe, experiment and document these ages-old creatures that breathe through their feet and swim upside down