In the ocean, sharks are near the top of the food chain.

If a shark is hungry, nothing can hide from it or escape it. Sharks have the same five senses as humans do, but they also have an extra sixth sense. What is this sense and how does a shark use all six senses to track down prey? Read and find out!

John F. Waters was the author of over thirty books for children about science, including two Junior Literary Guild selections, The Crab from Yesterday and Neighborhood Puddle.