2. The Sea What is the Sea? The sea is a very large area of salt water. The sea has different areas: Shoreline Open sea Ocean Depths

3. Sea Life Starfish Octopus And Squid Sharks Sea Turtles Seals and Sea lions JellyfishCoral Whales and Dolphins SeahorsesFish

4. Fish What is a fish? A fish must have: Gills Scales Backbone or cartilage They are cold blooded, usually lay eggs and live in fresh or salt water.

5. Starfish The starfish is also called a sea star It eats corals, clams, mussels and sea urchins It lives in tide pools ad rocky shores It can lay up to 2 million eggs at a time Starfish can regenerate injured or missing body parts

6. Octopus and Squid The octopus can grow up to 3 metres long and weigh up to 25 kilograms They eat crabs, crayfish and molluscs They like to live in warm oceans all over the world Female lays up to 150,000 eggs The octopus can release a cloud of black ink to provide cover while it escapes from enemies

7. Sharks There are many different types of sharks. Some sharks are dangerous, while others are gentle. Most sharks are meat eaters. Many sharks have rows of very sharp pointed teeth. When a shark loses a tooth, another one can move in from the back row. Sharks can lay eggs or have live babies. These babies are called pups. Sharks have cartilage, not bones. Cartilage is lighter than bone. Sharks can sink if they stop swimming.sharks.cartilage

8. Sea Turtles Turtles are reptiles and can live up to 100 yearsTurtles Some turtles are carnivores and others are herbivores carnivoresherbivores Turtles live all over the world in warmer oceans The leatherback is the world’s largest turtle Female turtles can lay over 100 eggs at a time

9. Seals and Sea lions Seals and sea lions are carnivorous marine mammalsSeals and sea lions They eat fish, shellfish, and other marine animals Sea lions and fur seals have small external earsexternal ears Sea lions are larger and their fur is courser and shorter than a fur seal Fur seals flippers are longer

10. Jellyfish Jellyfish have been in the ocean for more than 650 million yearsJellyfish They have no bones, brains, hearts or eyes Jellyfish are invertebrates, not fish invertebrates Its tentacles contain poisonous, stinging cells There may be 2000 species of jellyfish, but only 70 harm or can kill people

11. Coral Coral live in colonies, in warm shallow waters of the tropics and subtropicsCoralcolonies Cells at the base of each polyp take lime from the sea water to build up a stony skeleton. These are the corals that form great reefs.polyp Coral are carnivores and eat planktoncarnivoresplankton

12. Whales and Dolphins Whales and dolphins are known as the gentle mammals of the seaWhalesdolphins They are meat eaters Dolphins eat fish, shrimp and squid Whales eat plankton, fish, squid, sea lions, birds and other whalesplankton Dolphins communicate by sound: clicking and whistling

13. Seahorses Seahorses can grow up to 36 centimetres long and weigh up to 8 ouncesSeahorses They are carnivores and eat plankton, crustaceans and tiny fishcarnivores planktoncrustaceans Seahorses live in warm temperate oceans temperate The male seahorse keeps the female’s eggs in his brood pouch and carries them until they hatch

14. Glossary Crustaceana hard shell marine animal Invertebratewithout a back bone Vertebratehaving a back bone Cartilagestrong elastic tissue in body Carnivoreonly eats meat Herbivoreonly eats plants Regenerateto replace lost tissue or a lost limb or organ with a new growth Colonya group of animals or plants Temperatea climate that has a range of temperatures within moderate limits Polyp a single-cavity marine invertebrate Planktona mass of tiny floating organisms