Slide 1 Slide 2 2 Families Odontoceti (toothed whales) 67 species One opening for blowhole Mysticeti (baleen whales) 11 species Two openings for blowhole Slide 3 Teeth Toothed…

Slide 1 Slide 2 Respiration & Breathing Slide 3 Respiration What is respiration? It is the release of energy from food substances in living cells. Slide 4 respiration…

Slide 1 Whales, Dolphins and Porpoises Whales, dolphins and porpoises are cetaceans (Class Mammalia, Order Cetacea) Of all the marine mammals, cetaceans (and sirenians) have…

Slide 1 Whales Slide 2 Fossil Record Shows that some land animals began to make the transition to sea animals about 50 million years ago. Slide 3 Mammals Whales are mammals…

Slide 1 Order - Sirenia (Sirenians) Manatees, dugong, sea cows, and mermaids - Front flippers/ no rear Swim with up and down tail motion Slide 2 Wrinkled skin with little…

Slide 1 Excretory & Respiratory Systems Lungs and Kidneys Slide 2 Gas Exchange: oxygen & CO 2 Earliest type: Simple diffusion Diffusion = movement of particles to…