This organism is made up of large numbers of interlocking cells. They are shaped nearly identical to the testudohexapodia, but instead of forming sheets they form tubes. (Think of it as a rolled up sheet). The other adaptation they have made is the complete permeability with cells surrounding it. This way, all the food that is made from photosynthesis can be spread out between the cells, allowing greater numbers of cells to survive. They reproduce by mitosis.