Biologist discover a creature, which has sources of stable gravintanuim in it. It can teleport.
Gravitanium and organic life do not mix. It will strip any object of Oxygen and absorb it.
This is what happens when it comes in contact with Gravitanium.
14H2O(l) + Gn(p) --> GnO14(g) + 28H2(g) + Energy
The energy it produces is extremely high in amount, which is enough to combust the Hydrogen gas, and poisonous and corrosive Gravitanium Oxide gas. When this gas comes in contact with water, it creates Gravatic Acid. Gravatic Acid cannot be contained in anything except White Carbon containers. Gravatic Acid emits electricity as it is extremely unstable.
So no. You cannot put Gravitanium and Biological life together. Also, the ability to teleport, as is known by the modern Teleri method, is to disassemble the object, and reassemble it in the other location. Plus, as I said earlier, Gravitanium cannot be stabilized more than Gn-158 and still be called Gravitanium. After it decays from Gn-158, it decays to several random elements. Gravitanium cannot be used in the process of teleportation.