1. Pg. 120 RTW: What is one interesting thing you learned about Reptiles?
Monday, May 8th
Pg. 120 RTW: What is one interesting thing you learned about Reptiles?
Objective:
I will be able to cite examples and explain the adaptations to the marine environment of the vertebrate phyla: Reptilia.
Agenda:
Reptilia Foldable (1ST and 2nd PERIOD)
Reptilia Presentations (3, 4, 5 periods)
Final Review Packet (6, 7 periods)
Pinnipedia group be ready to present Wednesday
Homework:
Foldable due THURSDAY
Final Review Packet due THURSDAY
Vertebrate Test (Based on Fish Food Quizzes) THURSDAY
Mangrove Lab Report due 5/16
FINAL IN CLASS ON 5/16: STUDY

2. Chordate (class reptilia)
Examples:
Class reptilia: sea turtle, marine iguana, crocodiles, sea snakes.
General Characteristics:
They are ectotherms; which means “cold blooded”.
Bear their young in eggs
Breathe using lungs, instead of gills

3. Chordate (class reptilia)
Diagrams:
Reproduction: sexual and either lay eggs or have internal development without parental nourishment. (ovoviviparous)

4. Marine Reptiles phylum Chordata subphylum Vertebrata class Reptilia

5. Florida’s Sea Turtles

6. Five (5) species of marine turtles nest in Florida
Kemp’s Ridley
Hawksbill
Loggerhead
Green
Leatherback

8. Green Sea Turtle

9. Green turtle It is one of the largest species: 3ft long
recognized because they have one pair of scales in front of their eyes

10. Green Turtle Most common
It’s called the green turtle because of the green color of the fat under shell, they are not actually green.

11. Diet consists almost exclusively on seagrasses and marine algae (Hatchlings eat plants and animals)
Inhabits shallow waters and is attracted to lagoons with an abundance of grass and algae

12. Hawksbill

13. Hawksbill Turtle The beautiful shell often used for jewelry
Distinctive by its hawk like beak
Can reach 3 feet

14. Diet consists of primarily sponges
Inhabits rocky areas, coral reefs, coastal areas, lagoons.
Illegal trade of tortoiseshell continues

15. Kemp Ridley

16. Kemp’s Ridley

17. Kemp’s Ridley
most endangered species, as well as the smallest: only grows to in
They are olive green in color.
Mostly nest on one beach, in Rancho Nuevo, Mexico.

18. Carapace is almost as wide as long
Diet consists mostly of crabs
Females swarm to mass nesting emergences known as arribadas in the daylight.

19. arribadas

20. Leatherback

21. Leatherback
Can dive the deepest and travel the furthest of any other turtle.

22. Can reach 4 to 8 feet
Diet mostly jellyfish, but also sea urchins, squid, crustaceans, fish, blue-green bacteria, & floating seaweed
Most pelagic of all sea turtles

23. Leatherbacks
Instead of a solid shell they have bones in their skin that form 5 ridges.

25. Loggerhead

26. Loggerhead Turtle
They can be identified by their large head, reddish brown carapace (top), and dull brown plastron (bottom).

27. Diet consists of mollusks, crustaceans, fish, other marine animals
Widely distributed

28. Turtle concerns
Diseases……caused by???????
Pollution
Red Tide
Viruses

29. Fibropapilloma tumors
(FY bro PAP il LO ma)
Causes blindness
Difficulty swimming
Eventual death

32. Locations w/ infected Turtles

33. Turtle concerns 2. Us (humans) Boats Shrimp Boats, TED Devices
Plastics, trash
Loss of habitat
Turtle egg poaching
Beach nourishment/dredging
Beach driving

38. Interesting Facts: Archelon is the oldest known fossil at 150 MYA
Interesting Facts: Archelon is the oldest known fossil at 150 MYA. Found in 1970’s in S.Dakota.

39. Archelon: Measured 15 ft long (from beak to tail) and 16
Archelon: Measured 15 ft long (from beak to tail) and 16.5 ft wide (including flippers and shell), weighing 4,500 lbs.

40. Archelon: Primarily ate giant squid.

42. Males are bigger than females Males tend to swim past breaks
Marine Iguana (10 in- 2 ft)
Widely distributed throughout Galapagos
Population varies in color & size= single species
Herbivores= seaweed in intertidal zone
Males are bigger than females
Males tend to swim past breaks
Average diving depths= meters

43. Physical & Physiological Characteristics Permit feeding Habits
Marine Iguana
Physical &
Physiological
Characteristics
Permit feeding
Habits
-Long & sharp
claws
Land Iguana

44. Marine Iguana gripping
rocks during feeding

45. Adapted to swim well
Flattened tail for propulsion

46. Able to scrape algae off rocks with 3 cusped teeth- Razor Sharp!!

47. Sea Snakes Approx 70 species of sea snakes Almost all are venomous
Different from eels
Eels are fish with gills, not reptiles with lungs

48. American
Crocodile

50. American
Alligator

52. Gator vs Crocodile
Overlapping Teeth

53. Crocodiles
Have been on earth for about 100 million years
Human impacts have caused population to decline
Found around the
tip of Florida in
coastal, brackish
or saltwater habitats

54. American
Crocodile
American
Alligator

55. American Alligator Primarily freshwater swamps
Adults can tolerate saltwater for only short periods of time
Lack salt secreting glands found in crocodiles
Hatchlings receive parental care from mother staying with her for up to a year
Florida Red-bellied turtles tend to lay their eggs in an alligator nest

56. Baby turtles!

57. Pg. 120 What is one fact you already know about a marine mammal?
Tuesday, May 9th
Pg. 120 What is one fact you already know about a marine mammal?
Objective:
I will be able to cite examples and explain the adaptations to the marine environment of the vertebrate phyla: Mammalia
Agenda:
Mammalia Foldable
Pinnipedia group be ready to present tomorrow!
Homework:
Foldable due THURSDAY
Final Review Packet due THURSDAY
Vertebrate Test (Based on Fish Food Quizzes) THURSDAY
Mangrove Lab Report due 5/16
FINAL IN CLASS ON 5/16: STUDY

58. Chordate (class Mammalia: marine mammals)
Examples:
Order Cetacea: whales, dolphins, porpoises
Order Sirenia: manatees, dugongs
Order Carnivora: sea otters, polar bears
Order Pinnepedia: seals, sea lions
Characteristics:
5 mammal characteristics: hair, live young, produce milk, breathe air, endothermic
Adapted for swimming
Cetaceans use echolocation to navigate

59. Chordate (class mammalia)
Diagram:
Reproduction: sexual, live birth with placenta attached to mom. Mothers produce milk to feed young.

60. Kingdom: Animalia Phylum: Chordata Class: Mammalia
Marine Mammals

61. Characteristics Mammals went from land to sea 50 million years ago.
Their bodies have adapted to swimming and diving rather than running/jumping on land
Only produce a few well cared for young
Mammals are
Air breathing
Live birth, embryo receives nutrients through placenta
Warm blooded
Have mammary glands produce milk for young
Have hair at some point in their lives

62. Class Mammalia order Pinnipedia (Seals, Sea Lions & Walruses)
order Carnivora
(Sea Otters)
order Cetacea
(Whales, Dolphins
& Porpoises)
order Sirenia
(Manatees &
Dugongs)

63. Pinnipeds Seals Sea Lions Major differences:
Sea Lions can move back flipper forward
Sea Lions have external ears
Sea Lions males have external testicles
Sea Lions lack toes w/ claws
Sea Lions

64. Walruses

65. Exception: Monk Seals Pinnipeds usually live in cold water
Have a thick layer of blubber for insulation, food reserve & buoyancy
Bristly hair & large size conserve body heat (less surface area)
Exception: Monk Seals
These seals live in warm climates
Two species are rare: Mediterranean & Hawaiian
One species is extinct, last seen in 1952: Caribbean
Seals hunted for skin, meat & oil

66. c. 1910
Caribbean
Monk Seal
Last seen
In 1952

67. Sirenians Closest relatives to manatees & dugongs are elephants
The only true vegetarians among marine mammals
The extinct Steller’s sea cow was the largest
@ feet
Sirenians
Steller’s
Sea Cow

68. Dugong

70. class Mammalia order Pinnipedia (Seals, Sea Lions & Walruses)
order Carnivora
(Sea Otters)
order Cetacea
(Whales, Dolphins
& Porpoises)
order Sirenia
(Manatees &
Dugongs)

71. Breathing Blowhole takes air to lungs Toothed whales have 1 nostril
Baleen whales have 2 nostrils

72. Swimming Large body size- streamline shapes
Tail flukes and hind flippers propel them through water

73. Blubber Mammals are endothermic (warm blooded)
Blubber- used to keep them warm
Over 60cm thick, traps heat.

74. Communication & Echolocation
Well developed brains, very intelligent
Communicates using clicks & sounds through the melon.
Use the reflected sound to determine size, shape and density.
Songs produced by the Beluga & Humpback whales

75. Comparison of Vertebrate Brains- Brain is larger in relation
to body size & more complex compared to other vertebrates
This allows more storage & processing of information

76. Only marine member of the order Carnivora (exception- Polar bear)
Lacks a layer of blubber, has dense fur for insulation
Almost killed to extinction in 1911

77. Cetaceans (Cetus: greek for whale)
River Dolphin
Cetaceans (Cetus: greek for whale)
Largest group (90 species)
Experienced complete transition to aquatic life
Breathe through one single or double blowhole
All marine except a few species of dolphins
Cetaceans divided into 2 groups:
Toothless, filter feeding
Toothed, carnivorous

78. Suborder: Mysticeti (Baleen whales)
Toothless Whales- have two blowholes
Baleen is rows of flexible, fibrous plates that hang from the upper jaws.
Made of keratin (similar to hair & nails)
Hanging from the plates are bristles that overlap and form a dense mat
This filters out the food from the water that the whale takes in
13 species- Blue whale is largest (M-80ft/ F-110ft)
Baleen used for boning in corsets

79. Rorquals Whales that have an expanding throat (accordion like)
Ex. blue whale, fin whale, minke whale, & humpback whale
Blue Whale

80. http://www. ecokids. ca/pub/eco_info/topics/whales/habitat_degradation

81. Suborder: Odontoceti, (toothed whales)
Most are dolphins & porpoises
Largest toothed whale is the sperm whale-Now the most numerous
Pressures from whaling, drowning in nets are impacting all populations

82. Large whales will have a visible spout when they blow air out of blowhole
This is the condensation of their warm breath hitting the cooler air
The height & angle can help ID a whale at a distance (Blue Whale ft high)
Humpback Whale spout

83. No RTW: Pinnipedia group be ready to present when the bell rings!
Wednesday, May 10th
No RTW: Pinnipedia group be ready to present when the bell rings!
Objective:
I will be able to cite examples and explain the adaptations to the marine environment of the invertebrate phyla: Mammalia.
Agenda:
Pinnipedia Presentation
Homework:
Foldable due TOMORROW
Final Review Packet due TOMORROW
Vertebrate Test (Based on Fish Food Quizzes) TOMORROW
Mangrove Lab Report due 5/16
FINAL IN CLASS ON 5/16: STUDY

84. NO RTW: STUDY FOR THE VERTEBRATE TEST AND CLEAR YOUR DESK
Thursday, May 11th
NO RTW: STUDY FOR THE VERTEBRATE TEST AND CLEAR YOUR DESK
Objective:
I will be able to cite examples and explain the adaptations to the marine environment of the vertebrate phylums
Agenda:
Vertebrate Test
Grade review packet
Grade Foldable
Homework:
Mangrove Lab Report due 5/16
FINAL IN CLASS ON 5/16: STUDY

85. Work on… Foldable Final Review Packet
**I’ll come around and check them, if you don’t have it complete when I come around, bring it to my desk when you’re done.
DUE AT END OF PERIOD!

86. No RTW: Cetacea group be ready to present when the bell rings!
Friday, May 12th
No RTW: Cetacea group be ready to present when the bell rings!
Objective:
I will be able to cite examples and explain the adaptations to the marine environment of the vertebrate phyla: Mammalia.
Agenda:
Cetacea Fish Food Presentation
Homework:
Mangrove Lab Report due 5/16
FINAL IN CLASS ON 5/16: STUDY