Living in polar climates can be quite difficult, and staying warm can often be such an issue. But not anymore with the heat sponge! This nifty little organ draws heat from even the coldest water to keep you warm. How does it work? I’m glad you asked! Frigid sea water is taken into the organ, which is insulated to protect against thermal transfer. Upon reaching maximum capacity, the heat sponge initiates endothermic chemical reactions that proceed to absorb small amounts of energy from the water, cooling it further. The products from the endothermic reactions are then transported into the body and “burned” as fuel to provide heat for the creature. It’s that easy!
So sales pitch aside, here is the dilemma. While I know that there are endothermic reactions that can occur at low temperatures, I don’t know if they could be used this way, or if this type of heat transfer is even theoretically possible. So the question is could this method of drawing heat from a cold object and transferring it to a living creature work within the realm of physics. If it is theoretically possible but we don’t know if anything that actually does it then that’s fine.
If anyone does know of a physical process that could do this, or if anyone has any better ideas that could still produce the same effect, I’m all ears and generous with bonus points. I personally like this idea because it also justifies a creature being able to fire blasts of freezing water/ice as a breath weapon, which is very cool (bad pun I know).