Radiationcell has independently developed cold fusion, utilizing the large donut shaped organelle at its center to produce energy from the fusion of heavy water to create helium isotopes. it can also photosynthesize to make sugars and oxygen and all that. it lives on the seabed, and makes things around it slightly higher than normal background radiation. its nucleus membrane incorporates lead into it so as to provide shielding so it doesn't irradiate itself to death. With sufficent energy and resources they reproduce ever 5 minutes.