Shark Sense Simulator | Learn How Sharks Detect Prey

Can you feel electricity like a shark?

Arthur says: “I don’t just see or smell prey, I feel them with my snout! Sharks have special jelly-filled pores called ampullae of Lorenzini that detect electric signals. Let’s build a land-safe version to simulate this sixth sense!”

Quick safety note: A grown-up should handle the 9V battery connections. Keep wires away from mouths and tiny hands.

🔧 What You’ll Need:

• Balloon or small rubber sheet (simulates shark skin)
• Foil strips or copper tape (to create electric field)
• 9V battery
• LED or small buzzer
• Resistor (100–470 ohm range)
• Alligator clips or wires
• Piece of cardboard or foam board for mounting

🧪 Steps:

1. Stretch your “shark skin” (balloon or rubber) over the cardboard base.
2. Attach two foil strips about 1 inch apart. These are your artificial ampullae.
3. Use wires or clips to connect the foil strips to the LED circuit. One goes to the positive end of the battery through a resistor; the other to the LED or buzzer.
4. Test your circuit. When something conductive (like your finger or a metal spoon) nears the foil, the field changes and the LED may blink or the buzzer beep.
5. Try detecting different objects (wet vs. dry, metal vs. plastic) and record which trigger the reaction.

📘 What You’ll Learn:

Sharks detect electricity from muscle movement, even heartbeats. By mimicking this sensitivity using electric fields and detectors, we can explore electroreception and how sharks “see” without eyes.

Pocket Fact: Some sharks can detect electric fields as weak as one-billionth of a volt per centimeter, just a crab’s heartbeat hiding under the sand.