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Marine Mammals

Marine Mammals. 120 species of Marine Mammals. Ocean dwelling or rely on ocean for food. Evolved 50 million years ago from terrestrial mammals (similar to wolves). Types Marine Mammals. Cetaceans Whales, dolphins, porpoises Sirenians Manatees and dugong Pinnipeds Seals and Walrus

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Marine Mammals

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  1. Marine Mammals 120 species of Marine Mammals. Ocean dwelling or rely on ocean for food. Evolved 50 million years ago from terrestrial mammals (similar to wolves).

  2. Types Marine Mammals • Cetaceans • Whales, dolphins, porpoises • Sirenians • Manatees and dugong • Pinnipeds • Seals and Walrus • Otters (sea and river) • Polar Bear

  3. Characteristics of Mammals Have Mammary Glands 4 Chambered Hearts Hair Ear Bones Neocortex (brain part used for reasoning, motor movement, and communication)

  4. Adaptations to Ocean Life • Streamlined Body Shapes • Modified Appendages • Thermoregulation (temperature regulation) • Blubber, Fur, Hair • Osmoregulation (water regulation)

  5. Today’s Plan • Today, you’ll will start researching a marine mammal of your choice. • You can create any NON PowerPoint media to display the information. • This must be done by the end of the next class.

  6. Exit Ticket Answer the following questions… 1. Explain why you chose the marine mammal that you wanted to research.

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