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Marine Life

Marine Life. We will cover. 6 Types of Animals Sponges and Sea squirts Sea Anemones Worms Molluscs Crustaceans Echinoderms. Vertebrates Invertebrates Animal Habitats Types of Animals. Invertebrates. No back bone Soft Body With or without shell Shell called exoskeleton Examples

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Marine Life

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  1. Marine Life

  2. We will cover • 6 Types of Animals • Sponges and Sea squirts • Sea Anemones • Worms • Molluscs • Crustaceans • Echinoderms • Vertebrates • Invertebrates • Animal Habitats • Types of Animals

  3. Invertebrates • No back bone • Soft Body • With or without shell • Shell called exoskeleton • Examples • Crabs • Mussels • Jellyfish

  4. Vertebrates • With Backbone • Internal skeleton • Endoskeleton • Examples • Fish • Seals • Dolphins • Snorkelers

  5. Animal Habitats • The Sea covers 70% earths surface • Free swimming animal known as Motile • Worms, jellyfish, fish, seal, whales • Attached and does not move known as Sessile • Mussels, oysters, anemones, sponges

  6. Sponges and Sea squirts • Simple animals • Filter feeders • Plankton and Oxygen • Rounded, cup or bowl shape • Many small pores • Large cavity in centre • Colonies encrust rocks and other surfaces

  7. Sea squirts

  8. Sea Anemones • Jelly like animal • Look like flowers • Carnivorous • Sting can be painful • Some can retract tentacles • Coral large colonies Great Barrier Reef • Jellyfish large anemone that can swim

  9. Jellyfish • Common/moon Purple • Compass Brown • Compass tentacles sting similar to nettle sting • Snorkeler protected by neoprene • Beautiful to watch • Traps food with tentacles

  10. Worms • Similar to garden worms • Live in mud and sand • Marine worms called Polychaetes • Two groups swimmer or non swimmers • Ragworm swimming predator • Lugworms live in sand identified by sand coils

  11. Molluscs • Large group - mussels, oysters, whelks, top-shells, sea slugs etc. • Soft body, head, single foot cover by hard shell • Most feed by licking algae off rocks • Dog Whelk predator nick-named “driller killer” • Bi-valves filter feeders

  12. Crustaceans • Crabs, lobsters, prawns • Exoskeleton • Crabs and lobsters have • 5 pairs of legs, decapods • Legs have different uses swimming, defence, walking • Not all crabs have own shell • Hermit crab

  13. Echinoderms • Starfish, sea-urchins, brittlestar, sea- cucumbers • Starfish common in intertidal zone • Commonly seen by snorkelers • Starfish feed by inserting their stomach in prey • Sea urchin graze on algae on rocks

  14. We Covered • Vertebrates • Invertebrates • Animal Habitats • Types of Animals • 6 Types of Animals • Sponges and Sea squirts • Sea Anemones • Worms • Molluscs • Crustaceans • Echinoderms

  15. Questions

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