Marine Reptiles phylum Chordata subphylum Vertebrata class Reptilia.
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Transcript of Marine Reptiles phylum Chordata subphylum Vertebrata class Reptilia.
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Marine Reptilesphylum Chordata
subphylum Vertebrata
class Reptilia
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Florida’s Sea Turtles
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1. Kemp’s Ridley
2. Hawksbill
3. Loggerhead
4. Green
5. Leatherback
Five (5) species of marine turtles nest in Florida
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Green Sea Turtle
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Green turtle
It is one of the largest species: 3ft long
recognized because they have one pair of scales in front of their eyes
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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.
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• 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
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Hawksbill
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Hawksbill Turtle• The beautiful
shell often used for jewelry
• Distinctive by its hawk like beak
• Can reach 3 feet
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• Diet consists of primarily sponges• Inhabits rocky areas, coral reefs,
coastal areas, lagoons.• Illegal trade of tortoiseshell
continues
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Kemp Ridley
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Kemp’s Ridley
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Kemp’s Ridley • most endangered
species, as well as the smallest: only grows to 24-28 in
• They are olive green in color.
• Mostly nest on one beach, in Rancho Nuevo, Mexico.
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• Carapace is almost as wide as long• Diet consists mostly of crabs• Females swarm to mass nesting
emergences known as arribadas in the daylight.
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arribadasarribadas
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Leatherback
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Leatherback• Can dive the
deepest and travel the furthest of any other turtle.
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• 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
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Leatherbacks
• Instead of a solid shell they have bones in their skin that form 5 ridges.
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Loggerhead
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Loggerhead Turtle• They can be
identified by their large head, reddish brown carapace (top), and dull brown plastron (bottom).
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• Diet consists of mollusks, crustaceans, fish, other marine animals
• Widely distributed
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Turtle concerns
1. Diseases……caused by???????• Pollution• Red Tide• Viruses
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• Fibropapilloma tumors–(FY bro PAP il LO ma) –Causes blindness–Difficulty swimming –Eventual death
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Locations w/ infected Turtles
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Turtle concernsTurtle concerns2. 2. UsUs (humans) (humans)
BoatsBoats
Shrimp Boats, TED Shrimp Boats, TED DevicesDevices
Plastics, trashPlastics, trash
Loss of habitatLoss of habitat
Turtle egg poachingTurtle egg poaching
Beach Beach nourishment/dredgingnourishment/dredging
Beach drivingBeach driving
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http://www.scaquarium.org/seaturtle/rescue.aspx
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Interesting Facts:Archelon is the oldest known fossil at 150 MYA.
Found in 1970’s in S.Dakota.
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Archelon:Measured 15 ft long (from beak to tail) and
16.5 ft wide(including flippers and shell), weighing 4,500
lbs.
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Archelon:Primarily ate giant squid.
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• 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= 1.5-5 meters
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Physical &Physiological CharacteristicsPermit feedingHabits
-Long & sharpclaws
Land Iguana
Marine Iguana
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Marine Iguana gripping rocks during feeding
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• Adapted to swim well• Flattened tail for propulsion
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Able to scrape algae off rocks with 3 cusped teeth- Razor Sharp!!
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Sea Snakes
• Approx 70 species of sea snakes
• Almost all are venomous
• Different from eels– Eels are fish with
gills, not reptiles with lungs
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American
Crocodile
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American
Alligator
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Overlapping Teeth
Gator vs Crocodile
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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
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AmericanCrocodile
AmericanAlligator
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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 yearFlorida Red-bellied turtles tend to lay their
eggs in an alligator nest