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Cetaceans

Cetaceans. Giants of the Sea!. Mammals Aquatic Some of the largest animals in the world. Cetaceans. Whales. Dolphins. Porpoise. Adapted to Life in the Ocean. Flippers, Fins & Flukes. Streamlined. Common Dolphins. Minke Whale. Blubber. Blowholes. Courtesy: NOAA, Roletto (Gray).

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Cetaceans

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  1. Cetaceans Giants of the Sea!

  2. Mammals Aquatic Some of the largest animals in the world Cetaceans Whales Dolphins Porpoise

  3. Adapted to Life in the Ocean

  4. Flippers, Fins & Flukes

  5. Streamlined Common Dolphins Minke Whale

  6. Blubber

  7. Blowholes Courtesy: NOAA, Roletto (Gray)

  8. Baleen Whales- Mysticeti

  9. Baleen Whales Humpback Minke

  10. Baleen

  11. Filter Feeders

  12. Humpback • Most common large whale in our area • Black on dorsal side with long black and white flippers • Arch back before diving & shows flukes prior to deep dive • Length up to 60 feet STATUS: Endangered, 300-700 using US Atlantic waters. 8,000-10,000 in N. Atlantic Photo: NOAA

  13. Humpback Whale Photo By Graeme Cresswell Photo By Graeme Cresswell Photo By Richard Broughton Photo By Hugh Harrop

  14. Minke & Fin Whales Only whale w/ a white right jaw and baleen , and a dark left jaw and baleen

  15. Right Whale • Most endangered of the large whales • Length 20-50 feet • Black on dorsal side with yellowish bumps on their head (callosities) • In NJ spring and fall STATUS: Endangered, currently about 300 known in w. N. Atlantic waters. Although they have been protected from killing since the 1930’s, they have not “bounced back”.

  16. Toothed Whales- Odontoceti

  17. Toothed Whales Orca Sperm Whale Tooth

  18. Echolocation

  19. Sperm Whale • Heads are boxy • Heads are up to 1/3rd of body length • Blowhole on front left side of head • Skin is dark and wrinkled STATUS: Endangered butfairly common offshore.

  20. Pilot Whales • Black with large dorsal fins • Length 10-20 feet • Usually travel in pods (schools) • Normally in NJ in the spring • Longinned and Shortfinned Photo: nhm.org Photo: Corbis

  21. Beaked Whales • Four species in NJ (Blainville’s, Antillean, True’s and Goose) • Most beaked whales have 2 teeth (females not visible) • Long obvious beaks, small flippers, small dorsal fins set far back, and may have gill-like slits on their throats.

  22. Smaller Cetaceans Dolphins & Porpoise

  23. Harbor Porpoise

  24. Dolphins

  25. Bottlenose Dolphin • Usually seen in the summer • 3-10 feet long • Light gray on ventral side and darker gray on the rest of the body • Often give birth in our waters

  26. Risso’s Dolphin Only NJ dolphin without a beak

  27. Photo by Doug Lefler

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