Why can sharks sense electricity?

Answer: Detecting tiny electric fields with special pores

Powering their muscles with outside electricity — Wrong. Sharks don't draw electricity from outside to power muscles; they generate their own energy internally through metabolism, like all animals.

Detecting tiny electric fields with special pores ✓ — Correct! Sharks have ampullae of Lorenzini—gel-filled pores on their snouts that detect tiny electric fields from muscle contractions and heartbeats, helping them find hidden prey.

Sensing water temperature with skin receptors — Wrong. Temperature sensing uses different receptors; electroreception specifically detects electrical fields from living organisms' muscle and nerve activity.