Scientific name: superorder: selachimorpha
Video: view
Sharks are a type of large fish that live in the sea. There are many different varieties of shark. Some eat smaller fish, some eat penguins and seals, and others eat the same way as large whales, by sifting out tiny sea animals from the water.
Sharks constantly grow new teeth, and can lose thousands in their lifetime. Their skeleton is not made of bone, unlike most fish and animals, but is made from something softer and more flexible called cartilage. In people, cartilage is found around the ends of our bones to make our joints easier to move.
A shearer is someone who clips the wool, called a fleece, from sheep or other wooly animals.
Scientific name: ovis aries
Sheep are closely related to goats. People keep sheep for their wool and their meat. Every year the wool must be cut off the sheep so it can be used to make clothes - people who do this are called shearers.
Male sheep are called rams, female sheep are called ewes and baby sheep are called lambs. Rams grow big, curled horns as they get older.