What Is a Sea Invertebrate 4 Octopuses 6 Jellyfish 10 Corals 14 Sea Anemones 16 Sea Stars 18 Sea Urchins 20 Sponges 22 Crabs 24 Importance of Invertebrates 28 Glossary 30 For More Information 31 Index 32 CONTENTS
An invertebrate is an animal without a backbone An animal with a backbone is called a vertebrate Humans dogs and whales are examples of vertebrates Worms bees and snails are examples of invertebrates Invertebrates live in every part of the world In fact most of the animals on Earth are invertebrates Invertebrates come in all different shapes and sizes WHAT IS A SEA INVERTEBRATE Sponges flatworms jellyfish sea stars spiders shrimp snails and scallops are just a few of the many kinds of invertebrates 4
A sea invertebrate is an invertebrate that lives in the sea There are many different groups of invertebrates that live in the world’s oceans These animals have such features as stinging tentacles spiny skin soft bodies or an exoskeleton Some like sponges are very simple Sponges are merely a mass of specialized cells Others like octopuses are more complex Octopuses can change skin color very quickly and have been observed using tools Based on what you know about vertebrates and invertebrates think of ways that both types of animals are similar In what ways are they different Compare and Contrast Octopuses are known as one of the smartest invertebrates 5
