You can download all the resources in one file designed for easy printing. See printing instructions in the Site Guide if you need help. Click on the icon to hear each word pronounced and used in a sentence. Go to our help page if you need assistance configuring your browser to play sound files. Context - Most sharks are not vicious hunters of people.
Sharks use three primary methods to find their prey.
First, they can pick up very slight sounds through vibrations in the water when an object moves. Second, they have sensitive spots on their snouts that look like skin pores, but are really special glands that detect small amounts of electricity given off by animals. Third, they have a powerful sense of smell, so strong that it can pick up one molecule of blood in a million molecules of water. The shark s body is covered with thousands of tiny teeth known as dermal denticles or skin teeth. They point backwards to smooth the water over the shark s body so it can swim faster.