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Marine Mammals. Whales, Manatees, Seals. Mammals In Every Way. Warm-blooded Live birth – tail first. Always! Milk for offspring Fat storage – insulation and buoyancy Breathe through lungs. Flippers, Not Feet. Whales - Cetaceans.

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marine mammals

Marine Mammals

Whales, Manatees, Seals

mammals in every way
Mammals In Every Way
  • Warm-blooded
  • Live birth – tail first. Always!
  • Milk for offspring
  • Fat storage – insulation and buoyancy
  • Breathe through lungs
whales cetaceans
Whales - Cetaceans
    • Flattened heads, lack of external hind limbs, paddle-like forelimbs, location of blowhole
  • Largest animals on earth
whales a history
Whales – A History
  • Hunted for blubber – whale oil
  • Fishing practices that kill whales faster than they can reproduce
baleen or toothed
Baleen or Toothed?
  • Baleen have whalebone – sieve like teeth
    • Strain for food - krill
    • Cannot swallow large creatures – throats are too small
    • Two blowholes
    • Killed for meat, oil & baleen – 1.5 tons/whale!
  • Toothed have sharp teeth
    • Rip & tear
    • One blowhole
blue whale
Blue Whale
  • Largest. Animal. Ever!
    • Calves are 2 tons at birth. That’s 4,ooo pounds. That’s 4 grand pianos swimming at you.
    • Baby calf eats 200 pounds of milk. Every. Day. Until it’s seven months old. That’s 5,250 gallons. Of milk.
    • By 7 months, it will weigh 23 tons. And measure 52 feet long.
    • Can make babies by age 5
    • Will live to be ~35 years old
other baleen whales
Other Baleen Whales

Humpback Whale

Right Whale

sperm whale
Sperm Whale
  • Largest of the toothed
    • 50 feet long
    • Deep water whales
    • Will eat up to 2000 pounds (1 ton) of food a day
    • Love cuttlefish, squid, octopus
    • Found in all oceans
family
Family
  • Moms stay with babies. Even if the calf is dead!
  • Pods run by one or two cows. Bulls only enter during mating season
  • Gestation is 16 months long!
narwhal1
narwhal
  • Tusk is hollow
  • Males are 15 feet long with a 9 foot spire
  • Arctic Ocean
  • Eats small fish
orcas
Orcas
  • Actually a dolphin.
    • Largest dolphin at 31 feet long
    • 8 tons
  • Pod Life
    • Hunt together
    • Range in all oceans
    • Babies every 2 or 3 years