hi kids, my name is squidward. wanna meet some of my ... · characteristics • most advanced of...
TRANSCRIPT
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CEPHALOPODS
HI KIDS, MY
NAME IS
SQUIDWARD.
WANNA MEET
SOME OF MY
RELATIVES?
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CHARACTERISTICS
• MOST ADVANCED OF THE MOLLUSKS
• EYES ARE HIGHLY DEVELOPED
• ACTIVE SWIMMERS – SQUIRT WATER OUT OF A SIPHON TO PROPEL THEMSELVES BACKWARDS WITH JET PROPULSION
• ARMS & TENTACLES HAVE SUCTION CUPS TO HOLD PREY
CEPHALOPOD MEANS “HEAD-FOOT”
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CHARACTERISTICS
• SHARP BEAK-LIKE MOUTH TO BITE PREY
• VENOM IN SALIVA PARALYZES PREY
• CAN CHANGE COLOR RAPIDLY TO SHOW MOOD & COMMUNICATE
• SQUIRT INK TO ESCAPE FROM PREDATORS
http://www.sciencefriday.com/videos/watch/10397
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BEAK OF A
SQUID
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SQUID SUCKERS
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SQUID
2 TENTACLES
8 ARMS
SIPHON
• ACTIVE SWIMMERS
• AGGRESSIVE PREDATORS
• THIN INTERNAL SHELL
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ARROW SQUID
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LONG-FINNED SQUID
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REEF SQUID
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OPALESCENT SQUID
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SQUID EGGS
RMJA
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G I A N T
SQUID
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GIANT SQUID
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GIANT SQUID
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ZIGGY
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OCTOPUS • MOSTLY CRAWLS WITH ITS 8 ARMS
• LIVES IN HOLES/CREVICES/BURROWS
• NOCTURNAL PREDATORS
VISCERAL MASS
8 ARMS
SIPHON
• NO SKELETAL STRUCTURE
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WHITE-SPOTTED OCTOPUS
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TWO-SPOTTED OCTOPUS
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BROWNSTRIPE OCTOPUS
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GIANT PACIFIC OCTOPUS
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LONG-ARMED OCTOPUS
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ATLANTIC OCTOPUS
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BLUE-RINGED OCTOPUS
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OCTOPUS DEN
RMJA
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OCTOPUS SUCKERS
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CUTTLEFISH
• SQUID-LIKE FAST SWIMMERS
FINS
8 ARMS
2 TENTACLES
• INTERNAL THICK BONE-LIKE STRUCTURE (cuttlebone) FOR SUPPORT & BUOYANCY
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CUTTLEFISH
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CUTTLEFISH
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CUTTLEFISH
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CUTTLEFISH
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NAUTILUS • SLOW SWIMMERS
• MAINTAIN BUOYANCY BY FILLING SHELL CHAMBERS WITH WATER OR AIR
• BODY IS IN LARGEST CHAMBER
• CAN HAVE UP TO 90 ARMS
• LIGHT CHAMBERED SHELL
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CHAMBERED NAUTILUS
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CHAMBERED NAUTILUS
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CHAMBERED NAUTILUS
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UP CLOSE & PERSONAL WITH A SQUID
FOOT HEAD
VISCERAL MASS
FIN MANTLE EYE 8 ARMS 2 TENTACLES
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UP CLOSE & PERSONAL
MOUTH JAW
RADULA ESOPHAGUS STOMACH
GONAD
INTESTINE
LIVER
SALIVARY GLANDS
INK SAC SIPHON
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UP CLOSE & PERSONAL
BRAIN
SYSTEMIC HEART FOR BODY
BRANCHIAL HEARTS FOR GILLS
GILL
SHELL