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Longwood High School Virtual Zoo Chief Caretaker - Mr. E. Heinrichs.

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Presentation on theme: "Longwood High School Virtual Zoo Chief Caretaker - Mr. E. Heinrichs."— Presentation transcript:

1 Longwood High School Virtual Zoo Chief Caretaker - Mr. E. Heinrichs

2 Learn all you can then visit the quiz house to test your knowledge.
To successfully visit the Virtual Zoo just click on the location you wish to explore. Learn all you can then visit the quiz house to test your knowledge. Think you know more than me?

3 LHS Virtual Zoo Welcome Fish Arthropods Coelenterates Reptiles
Amphibians Mammals Aviary Commissary Annelids Round Worms Sponge LHS Virtual Zoo Welcome Echinoderm Flatworms Quiz House

4 Coelenterates Check this out !
Included: Hydra, Jellyfish, Coral, Sea Anemones Check this out !

5 Coelenterates have a simple digestive system called the gastrovascular cavity.
They are made up of three main body layers 1. epidermis: outer body 2. gastroderm: inner surface of the gastrovascular cavity 3. mesoglea: jelly-like material found between layers Coelenterates feed on small animals captured with their nemotocysts, (Stinging Cells) which are located on the tentacle. Coelenterates lack muscles to help them move about. Most Coelenterates expand and contract the epidermis cells in the tentacles in order to help them move about. Coelenterates can reproduce both sexually and asexually. . Coelenterates have radial symmetry.

6 Coelenterates - Eating
Nematocysts are poison filled sacs on a spring. When they are touched, it darts off, explodes and buries itself into the skin of the animal. The dart paralyzes the prey so the cnidarian can attack. It uses it's tentacles to shove the prey into it's mouth. Most of the food is digested, but some waste is released back out the mouth. Coelenterates contain a very simple nervous system called a nerve net that is concentrated around the mouth. Back to the Map!

7 Bird Aviary

8 Birds General Characteristics: More Feathers - Modified Scales?
Spindle shaped body Two pair of limbs (Wings & Legs) Strong and lightweight bone structure Four chambered Heart More Birds

9 Back to the Map! Horn covered bill or beak Excretory system does not contain a urinary bladder Internal fertilization / external development Warm blooded

10 Welcome to the LHS Virtual Zoo Commissary Back to the Map

11 Need a BREAK

12 Tension Breaker Had to be done!

13 Yummy

14 This zoo is more fun than a Barrel of Monkeys?

15 Click on the photo to go there!
Map Amphibians Include: Frogs, Toads, Salamanders and Newts. General Characteristics: Ectothermic – Cold-Blooded Reproduction and development must take place in water Thin skin that contains mucus-secreting glands Two pair of limbs for walking, jumping and swimming One pair nostrils connected to the Oral cavity Three chambered heart (Two Atria – One Ventricle) Metamorphosis during development from juvenile to adult form Click on the photo to go there!

16 Salamanders and Newts Have Tails even as adults
Long bodies and tails with four short limbs Feed on fish, snails, insects, worms and other salamanders Some are entirely aquatic which never lose their juvenile gills Others live on land in moist regions breathing with lungs

17 Salamanders and Newts We are really the same thing as a salamander!
Have Tails even as adults Long bodies and tails with four short limbs Feed on fish, snails, insects, worms and other salamanders Some are entirely aquatic which never lose their juvenile gills Others live on land in moist regions breathing with lungs We are really the same thing as a salamander!

18 Toads Adults have short squat bodies
No tails Adults have short squat bodies Strong hind legs well suited for jumping Dry, rough, warty skin Can survive away from water Burrow in daytime to avoid sun Hibernate during the winter underground Feed on insects and worms

19 Frogs No tails Adults have short squat bodies Strong hind legs well suited for jumping Thin, moist skin that is loosely attached to their body Live near water Hibernate during the winter in mud at the bottom of water body Feed on insects and worms Larval form called a tadpole Click for more about Frogs Sounds

20 What about Reproduction!
Frogs and toads protect themselves by; 1. Camouflage 2. Jumping ability 3. Diving underwater or out onto land 4. Unpleasant taste or poison produced by glands in the skin What about Reproduction! Click me!

21 Reproduction of the frog
Frogs mate externally releasing millions of eggs and sperm into the water. The male will grasp the female with its front legs helping her squeeze her eggs out and ensuring his sperm have a better chance of fertilization. After 6 – 9 days eggs hatch into tadpoles. Tadpoles have no legs or lungs. They breathe with gills and swim with tails. Tadpoles have a two-chambered heart. Metamorphosis ranges between three months to several years. During this time the tadpole reabsorbs the tail, grows legs and develops lungs.

22 Reptiles Include: Turtles Lizards Snakes Alligators Crocodiles

23 General Characteristics:
Ectothermic – Cold-Blooded Live on land (some aquatic) Internal Fertilization & external development - Lay eggs Thick leathery eggshell protects egg No metamorphosis during lifecycle Dry scaly skin – protects against desiccation Two pair of legs (*except snakes) Five clawed toes per foot* Circulation – three chambered heart (two Atria – one partially separated Ventricle) Partial separation restricts mixing of oxygenated & deoxygenated blood to body cells. Crocodiles and alligators have four chambered hearts. Excretion – Nitrogenous waste is excreted as Uric Acid making the urine a semisolid paste. This adaptation helps conserve water.

24 Snakes No legs, or ear openings Immovable eyelids
Different size scales Found in all biomes Feed on many small animals Forked tongue contains odor-sensing organs that pick up scents and deliver them to the Jacobson’s organs in the roof of the mouth Deaf to airborne sounds but feel ground vibrations Pit Vipers have heat-detecting organs between nostrils and eyes

25 Click on photo for fullscreen
Eating – Some snakes swallow their prey alive while others kill it before swallowing. Large snakes such as pythons and Boas crush their prey or suffocate it using their body coils before swallowing. Poisonous snakes have specialized teeth called fangs that are connected to their salivary glands where poison or venom is made. Venom is pumped into bite through hollow or grooved fang. Neurotoxin – attacks nervous system, paralyzing victim Hemotoxin – attack RBC and other blood vessels Snakes can swallow prey many times larger than their mouth by dislocating their jaw. Teeth are angled backwards to prevent food from escaping. Ribs expand because they are only attached on one side. Windpipe is projected forward so the snake can breathe throughout the long swallowing process. After a large meal a snake can go weeks or even months without feeding. Click on photo for fullscreen

26 Always during Dinner!

27 That’s a Gazelle this African Rock Python is eating!

28 Website may take time to load.
Crocodiles & Alligators Largest living reptiles Located in Tropical wetlands Alligator – Fresh Water only Crocodile – Both Salt & Fresh Strong muscular tails used for swimming Long snout with powerful jaws Teeth are arranged differently Alligator – Teeth enclosed Broad snout Less aggressive Crocodile –Teeth exposed Pointed snout More aggressive Feed on animals captured by ambush Website may take time to load.

29 Turtles Found on land, marine and fresh water
Body enclosed in protective shell Carapace (top) Plastron (bottom) Feed on plants and small animals No teeth – tear food with a hard, sharp beak Internal Fertilization & External Development (Lay eggs on land)

30 Lizards Four legs with claws Uniform Scales Movable eyelids
External ear openings Live in all biomes Feed on varied food (Insects, small animals, eggs, plants, etc…) Defenses vary but include; removable tails, coloration, poison

31 Fish – There are Four Classes of fish
Jawless Fish make up two individual classes that are the most primitive vertebrates. Cartilage Fish - Sharks and Rays Bony Fish - Bluefish, Flounder

32 Lampreys No true jaw. Long snake-like bodies with smooth scales on skin. Two single dorsal fins and one tailfin. Skeleton composed of cartilage. External fertilization and development. Found in fresh and salt water. Most are parasites, attaching to the side of larger fish with suction cup mouth and gnawing a hole into the side to drink blood and body fluids. Mate in fresh water streams where they remain for 3 to 7 years. Adults only live one or two years. See Lamprey’s feed

33 Lamprey

34 Hagfish Long snake-like bodies with smooth scales on skin.
Two single dorsal fins and one tail fin. No true jaw. Skeleton composed of cartilage. External fertilization and development. Found only in salt water. Feed on dead animals at the bottom of the ocean. Skin gland produce large quantities of slime when threatened.

35 Cartilaginous Fish Include: sharks, rays and skates
Skeleton completely made of cartilage. Movable upper and lower jaws with sharp teeth. Two chambered hearts. Feed on a variety of food.

36 Cartilaginous Fish - Skates and Rays
Flattened wing like bodies with whip-like tails Live on ocean floor Feed on worms, mollusks and crustaceans Defense includes; poison stingers, electric charges

37 Sharks Streamlined fish that move with their tails
Swimming forces water over gills and out five or seven pairs of gill slits. If a shark stops moving it will die due to lack of oxygen. Internal Fertilization and both internal and external development Well-developed sense of smell and vibration Most Feed on fish and some feed on Plankton Skin covered with placoid scales (tough, tooth- like scales)

38 Bony Fish Largest class of vertebrates. Skeleton made of bone.
Paired fins. Protective, overlapping scales. Body form varies from the eel to the Seahorse with most following the streamlined body construction as in the Perch. Fins made of bone and cartilage connected with skin webbing. Fins aid maintaining balance and movement.

39 Defense includes; sharp spines, inflation, flying,
Bony Fish (Cont.) Gills provide oxygen but unlike sharks fish can draw water over gills. Two Chambered heart (One Atria & One Ventricle) Swim Bladder helps fish maintain buoyancy Fertilization and development are external Defense includes; sharp spines, inflation, flying, strong electric charge, poison, etc

40 Sponge Simplest of all animals Contain many pores through which
water flows continuously All sponges are aquatic Adults are sessile (don’t move) Larvae are free swimming Size and shape vary widely Many different colors Click me

41 You’re a good Sport and Hopefully your learning a thing or two!

42 Three layer body composition
Outer layer composed of thin epidermal cells Middle layer filled with gel and amebocytes (Wandering cells) Amebocytes secrete spicules which provide support Inner layer contains collar cells and have a flagellum for food gathering The beating of the collar cells and their flagellum create a current drawing water through sponge and out the Osculum (top) Respiration is by diffusion Reproduction either asexual (budding) or sexual (gametes)

43 I am NOT a Fish! Echinoderms (Spiny Skinned Animals) Includes;
More Echinoderms (Spiny Skinned Animals) Includes; Starfish, Sea Cucumbers and Sand Dollars I am NOT a Fish!

44 All Marine living on the ocean floor Larva have Bilateral Symmetry
Adults have Radial Symmetry (demonstration) Internal skeleton which provides support and protection Skeleton composed of hard calcified plates embedded in the body wall Spiny projections stick out the body wall Click

45 Sea Star OUCH !! That’s Better Regeneration Click
Most have five arms radiating from a central disk (can have as many as 20) Respiration is conducted by diffusion across the skin gills Fertilization and development are external Sea Stars can regenerate lost body parts OUCH !! That’s Better Regeneration Click

46 Feed on clams and oysters, prying the prey open using its tube feet
Feed on clams and oysters, prying the prey open using its tube feet. It then inserts stomach through opening. Enzymes are secreted partially digesting the prey which is reabsorbed by the stomach and fully digested in the arms of the sea star. Move utilizing a water-vascular system Dorsal surface has a Sieve plate into which sea water enters traveling through a series of canals to the tube feet on each radial arm. If water is pumped out of the tube feet the sea star creates a suction within the cup and can grasp the object. If water is pumped into the tube feet the sea star releases its suction and therefore lets go.

47 Flat Worms Include; Free living flatworms (planarian),
Parasitic flukes, Parasitic tapeworms General Characteristics Bilateral symmetry Flattened bodies Three body layers Ectoderm – outside Mesoderm – middle Endoderm – inside Planarian Flukes Tapeworm

48 Planarian Live in fresh water Gray, brown or black in color
Triangular head with eyespots (detect light intensity) When eating pharynx is projected out the mouth and sucks small bits of food in Excretion occurs through the oral cavity No skeletal, respiratory or circulatory systems (Diffusion) Hermaphroditic with no self-fertilization Internal fertilization and external development

49 Flukes Parasitic Body covered with thick cuticle, which protects it from host’s Immune System. Suckers help it attach to host intestinal blood vessels Eat pre-digested food Reproduction 1. Eggs laid in and removed by host excretory system 2. Eggs hatch into free swimming larvae in water 3. Larvae enter snails and reproduce asexually 4. New organisms leave snail and infect water sources 5. Flukes bore into host through skin Cause; loss of blood, diarrhea, severe pain

50 Tapeworm Parasitic Long ribbon-like body form
Four to nine meters in length Contain excretory, nervous and highly developed reproductive systems Lack mouths and digestive systems Scolex (head) contain hooks and/or suckers to hold themselves in the intestinal tract of host Digested food diffuse into tapeworm’s body Reproduction

51 Reproduction 1. Beneath head is a region of reproduction which makes
more segments 2. Hermaphroditic and can self fertilize 3. End sections filled with 100,000 fertilized eggs break off and are removed through host excretory system 4. If contaminated food is eaten by cattle or pigs, larvae embed themselves in the muscle fibers forming a dormant capsule 5. Humans eat undercooked, contaminated meat releasing the tapeworm Causes; nutrient deprivation, blockage of intestinal tract

52 Annelida – Segmented Worms
Include; Earthworm Leech Clam Worm

53 Try Me Segmented Worms Body composed of a series of segments
Found in marine, fresh water or land Nervous system – concentrated at anterior end Cerebral ganglia (primitive brain) Turns into ventral nerve cord passing posteriorly Digestive system – straight, tubular, muscular canal which can function independently from body wall. Coelom (Fluid filled cavity) separate alimentary canal from body wall. Try Me Think you remember the internal structures?

54 Clam Worm (Sand Worm)– Live in intertidal zone
Feeds at night - burrows during the day Eats by extending pharynx out mouth exposing jaws that grasp food Fertilization and development external

55 Ouch! Leech Freshwater parasite Segmentation difficult to see
Attach to host using anterior and posterior suckers Anterior sucker contains mouth and jaws which cut host skin Enzymes prevent blood clotting as leech sucks up blood Fertilization is internal in hermaphroditic leeches Development is external Ouch!

56 Earthworm Quiz Answers Word Bank Crop Gizzard Pharynx Esophagus
Seminal Vesicles Seminal Receptacles Intestine Dorsal Blood vessel Aortic Arch Nephridia Nerve Cord Answers

57 Earthworm Quiz Answers Word Bank Crop………………... F Gizzard……………... G
Pharynx……………..A Esophagus…………. B Seminal Vesicles….. C Seminal Receptacles.. D Intestine…….……… H Dorsal Blood vessel... I Aortic Arch………….E Nephridia…………... K Nerve Cord………….J

58 Arthropods Most Biologically successful group of animals
There are more species of Arthropods than all other organisms put together! All have bilateral symmetry All have jointed legs All have exoskeleton (made of protein and Chitin) Must molt to grow Segmented into Head, Thorax and Abdomen Well-developed nervous system including; sense organs (eyes, antennae, hearing) Open circulatory system Divided into Five Classes – Crustaceans, Centipedes, Millipedes, Arachnids and Insects * Click on class names *

59 Crustaceans More Include; Lobsters, Crabs, Crayfish,
Shrimp, Barnacles, Water fleas and others Two pair antennae on their head Exoskeleton – hardened with lime Head and Thorax fused into a cephalothorax (Carapace – upper portion) Paired appendages have specific function Antennae – taste, smell, touch, balance Mandibles – Crush, taste, handle food Chelipeds – grasping, catching food, defense Walking legs – four pair Swimmerets – Swimming, Carry eggs(female) Telson/Uropods – backwards movement More

60 Regeneration of lost or damaged parts
Open circulatory system Gills provide oxygen to body cells Complex nervous system Brain connected to eyes, antennules and antennae Sensory organs include compound eyes on moveable stalks Sensory hair detect touch and chemicals Statocysts – manage equilibrium utilizing sand grains obtained during molt Reproduction – Sperm transferred to female using swimmerets, where it remains until spring. Female lays hundreds of eggs which are held by her through several molts and released.

61 Centipedes Typically have 30 to 35 pair of legs Segmented body
All segments have legs Feed on insects caught with poison claws

62 Millipedes Typically more than 300 pair of legs Segmented body
Two pair of legs per segment No poison claws Slower than centipedes Feed on decaying plant material

63 Arachnids Include; Spiders, Scorpions, Ticks, Mites
Body composed of cephalothorax and abdomen No antennae Cheliceras – fangs deliver toxins which paralyze victim as “Sucking Stomach” ingests body fluids Pedipalps – Sensitive to chemicals and touch and are used for holding food. Male delivers sperm to female with the palipalps. More

64 Six walking legs Breathe with book lungs located on the lower abdomen (leaf-like plates) Internal fertilization & external development Female lays eggs and wraps them in a cocoon, which is carried, deposited in the ground or laid into other animals. Spinnerets – spin silk (fluid protein) from silk glands in abdomen Web used to; construct webs, line nests, make cocoons for eggs, elevating themselves, and escape danger

65 Include; More than 900,000 known species. WHY?
Insects Include; More than 900,000 known species. WHY? - Only invertebrate capable of flight ( food search, mating, predator escape) - Short life cycle & high reproductive rate ( increases adaptation) - Small size ( require small habitats) M O R E

66 General Characteristics
Three body sections (Head, Thorax, Abdomen) One pair antennae Compound eyes Three pair walking legs Some have wings Variation of mouthparts to their food source Chewing – grasshopper Sucking – Bee Needle-like – Mosquito Coiled Siphon – Butterfly Sponging & Lapping – Fly More

67 Reproduce sexually, most undergoing a metamorphosis
Incomplete Metamorphosis – Egg, Nymph, Adult ex. Grasshopper Complete Metamorphosis – Eggs, Larvae(caterpillar), Pupa, Adult ex. Butterfly

68 Round Worms Include; Trichina, Filaria, Pinworms, and hookworm
Bilateral symmetry Two opening digestive tract Elongated, cylindrical bodies tapered at each end Covered with a tough cuticle Free-living or parasitic Live in all regions (aquatic or terrestrial) No circulatory or respiratory systems Move in a whip-like fashion Internal fertilization and external development Click for diseases

69 Most are parasites causing diseases
Can be controlled with good hygiene, proper sanitation, proper cooking and drugs Diseases; Trichina - Trichinosis Filaria - Elephantiasis Pinworms – itching Hookworm – suck blood from intestine after trip through lung Elephantiasis

70 Welcome to the Quiz House

71 What is the LARGEST phylum of animals?
Question #1 What is the LARGEST phylum of animals? c. Mammals a. Birds b. Arthropods

72 Wrong !!! Try Again

73 Which of the following is NOT an Annelid?
Question #2 Which of the following is NOT an Annelid? Clamworm B. Earthworm C. Ringworm D. Leech

74 Correct !!!! Next Question

75 Survey Says? Wrong Try Again

76 Your Right !!! Next

77 How many different types of Mammals are there?
Question #3 How many different types of Mammals are there? A. 1 B. 3 C. 15 D. 26

78 So Sorry Try Again

79 That's It !!! Next Question

80 Question #4 What is an Echinoderm? A spiny skinned animal.
A type of mammal. A marine creature similar to an Octopus. A Skin Disease.

81 Well Alrighty Then Next Question

82 Sorry Better Luck Next Time... Try Again

83 Question #5 Which of the following is not a Cartilage Fish? Shark Ray

84 Phenominal ! Next Question

85 How could you get this question
WRONG? Try Again

86 Question #6 Is this an Alligator or a Crocodile? Alligator Crocodile

87 Good Work !!! Next Question

88 Are you kidding me? Try Again

89 It Can't Be ! Return

90 Question #7 Which of the following is Ectothermic? Amphibian Bird
Mammal All of the above

91 Go Back Bzzzzzz... Try Again

92 Surprize Your Right ! Next Question

93 What is the difference between a spider and an insect?
Question #8 What is the difference between a spider and an insect? Spiders have six legs. B. Spiders have eight legs. C. Insects don’t have antennae. D. Spiders are Icky!

94 Absolutely! Next Question

95 NOT !!! Absolutely! Go Back

96 You have to be Kidding Me!
Go Back

97 What is the Simplest of all animals?
Question #9 What is the Simplest of all animals? Human Jellyfish Sponge

98 Moving on… Your so Smart

99 Brain Freeze Defrost

100 Last Question Which of the following is a true statement concerning Birds? They don’t have a Urinary Bladder. They have a 4 chambered heart. They are spindle shaped. All of the above. Answer Answer Answer Answer

101 Guess Away It's the Last one. Try Harder!

102 Congratulations Job Well Done

103 Of course you get it right now... There are only two choices!
Next Question

104 Mammals Onward ! General Characteristics: Most are terrestrial
All have Hair (Amount varies) Warm Blooded Four chambered heart Highly developed Cerebrum (part of the brain) Highly differentiated teeth Give birth to live young (except Monotremes) Nourish their young with milk produced in mammary glands Onward !

105 Types of Mammals

106 Monotremes – “Egg laying mammals”
Platypus Spiny Anteater Monotremes – “Egg laying mammals” Only live in Australia. Most primitive of the mammals.

107 Marsupials – “Pouched Animals”
Give birth to very young, immature offspring which must climb into mothers pouch without assistance. Kangaroo Koala Bear Opossum

108 Placental Mammals – Young remain in the
uterus of the mother until development is complete. Types of…

109 "Hoofed Mammal" Order: Ungulates Artiodactyla Next >
Even Number of toes Herbivores Feeds in herds Flat teeth for grinding plants Examples; Pigs, Deer, Antelope, Sheep, Cattle, Giraffe and Camels (pictured) Next >

110 Class: Perissodactyla
Order: Ungulates Class: Perissodactyla Next Odd Number of Toes Enlarged claw that forms hoof. Walk on their toes. Most live in Grasslands or Savannahs. Lg. grooved molars to grind grasses. Examples; Horse, Tapir, Rhinoceros

111 Carnivora Next Include: feline, canine, ursidae (bear) Predatory
Flesh eating. Dental arrangements determine families. Next Carnivora

112 Only Two Species left alive! African Elephant and Indian Elephant
Proboscidea - "Trunk nosed" Next Mammal Only Two Species left alive! African Elephant and Indian Elephant INFO See an Elephant Skull

113 Proboscidea Thick Skin. Matriarchal Social Structure.
Babies cared for several years. Males live solitary lives. Trunk extremely flexible, muscular organ. Trunk Uses: ~ Exploration ~ Friendly wrestling matches ~ Feeding ~ Grab & throw objects ~ Drinking ~ Smell

114 Proboscidea Elephant Skull Elephant Foot

115 “Mammals without teeth”
Order – Edentata “Mammals without teeth” Include; Anteaters Armadillos (Pictured) Sloth (pictured below) These mammals have either very small teeth or no teeth at all. Next

116 Insectivores Examples - Shrew, Hedgehog, Moles There’s More?
Eat insects Long Narrow snout Small eyes and external ear openings Hibernate during winter 5 clawed digits There’s More?

117 Lagomorpha Next Herbivore Elongated ears and hind limbs Short Tails
Incisors (Front teeth) grow throughout life. Elongated ears and hind limbs Want to see a Rabbit skull?

118 Back Lagomorpha

119 Rodentia - Highly Adaptable - Single pair of razor sharp incisors grow continuously. - Opportunists - High reproductive rate Next

120 Primate Closest biological relative. Highly organized cerebral cortex
200 Known species MORE?

121 Primate Opposable Thumbs. Fingernails not claws.
Sensitive pads on underside of fingers. Teeth vary considerably. Increased Brain size. Upright posture. Social grouping. Stereoscopic vision (allows depth perception).                                           Pictures MORE?

122 What are you Looking At?

123 Chiroptera "Hand Wing" Vampires!!! More Still! Only Flying Mammal.
Pollinate Plants Disperse Seed Feed on Insect pests (Up to 600per hour) Nocturnal – Roost in colonies Vampires!!! More Still!

124 Vampire Bats Vampire bats usually feed on livestock, although humans may occasionally be unwilling blood donors. They make a small, painless incision in the skin and lap up the blood with their tongues while anti-coagulant chemicals in their saliva ensure that the blood meal continues flowing.

125 Cetaceans Two types Mysticeti (Baleen Whales) Odontoceti (Toothed
Moving on… Mysticeti (Baleen Whales) Odontoceti (Toothed Whales)

126 Mysticeti Types: Blue, Gray, Humpback, Fin, Right, Minke, Bowhead
Largest Animals on Planet Baleen Plates instead of teeth Baleen made of Keratin (Same thing as fingernails and hair) Eat Krill, Plankton & Sm. Fish 2 Blowholes Symmetrical Skull No Echolocation

127 Types: Sperm, Killer, Beaked, Pilot, Beluga, Dolphins, Porpoise, Narwhal
Teeth ( depends on species) Eat fish, squid, marine mammals Smaller than mysticeti 1 Blowhole Echolocation Asymmetrical Skull Odontoceti Photos of Narwhals

128 Odontoceti Narwhal That Horn is really a tooth!

129 Pinnipedia Keep them coming Aquatic Carnivores
Evolutionary split from Ursidae (Bears) Fore flippers and Tusks Skillful divers & Swimmers Eat Krill, crustaceans, mollusks and fish.

130 Sirenia Manatee Skull “The Slow, passive animals Mermaids”
Tropical waters Herbivores Eat 30 Lbs. food daily Forelimbs modified into flippers Vestigial pelvis Flattened tail Mammary gland under front flipper That’s a lot of Mammals! Manatee Skull

131 Back

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