Complex sentence: The gel is a glycoprotein based substance with the same resistivity of seawater, and it has electrical properties similar to a semiconductor, allowing it to essentially transduce temperature changes into an electrical signal that the shark may use to detect temperature gradients.
Split into simpler sentences: The gel is a glycoprotein based substance with the same resistivity as seawater, and it has electrical properties similar to a semiconductor. This allows it to essentially transduce temperature changes into an electrical signal that the shark may use to detect temperature gradients.