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Marine Reptiles and Birds Marine Biology Unit #5

Marine Biology Unit #5. Vertebrates Scaly skin Lay eggs Reptiles found in subtropics and tropics Birds found from tropics to polar seas

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Reptiles & BirdsVertebratesScaly skin Lay eggs

Reptiles found in subtropics and tropicsBirds found from tropics to polar seasMarine Reptiles7000 species; arose about 325 myaWalking or crawling on two pairs limbsLungsWaterproof eggsEctothermicDry scalesSea turtlesSea snakesMarine iguanaSaltwater crocodile

Sea TurtlesFound in tropics and subtropicsHead not retractable into carapaceFlippersBouyant7 speciesEndangered

Sea TurtlesGreen Sea Turtle

TropicalGrows to 1 meterEats seagrasses

Sea TurtlesHawksbill Turtle

SmallerRed-brown shellCarnivorous

Sea TurtlesLeatherback TurtleLargest sea turtleUp to 2 meters; 500 kgShell not solidEats jellies

Sea TurtlesLoggerhead Turtle

< 1 meterFloridaEats crustaceans

Sea TurtlesRidley Sea TurtlesKempsSmallest sea turtle~ 60 cm longGulf of Mexico

Olive or Pacifictropical

Sea TurtlesFlatback Sea Turtle

Northern AustraliaCoastal

Sea Turtle ReproductionMating in the waterFemale buries about 100 eggsMates again4-5 egg layings per year

Hatch?DogsCrabsVarmintsBirdsFish

Sea SnakesFound in tropical Pacific and Indian Oceans50 speciesVenomousPaddle-shaped tailPrey on bottom fish

Marine Iguanas1 species; found on Galapagos IslandsPaddle-shaped tailFeeds on seaweeds

Saltwater Crocodiles

Inhabit mangrove swampsEastern Indian Ocean, Australia, and Western Pacific OceanGrow up to 10 metersAggressive

Saltwater CrocodilesWill attack and eat people (or sharks!)

Sea Birds9700 species of birds; 300 are sea birds

Endothermic

Waterproof feathers

Hollow bones

Predators

Sea BirdsPenguins

Most aquatic of all sea birds18 speciesAll in Southern HemisphereCompletely flightlessEats fish, krill, squid, shellfish

Sea BirdsGalapagos Penguin found on equator

Sea BirdsShorebirds

Sandpipers

Oystercatchers

Snowy egrets

Sea gulls

Sea BirdsDiving Shorebirds

Pelicans

Cormorants

Ospreys

Sea BirdsDiving Pelagic Birds

Petrels

Auks

Gannets

Puffins

Albatrosses