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Phylum Mollusca Class Cephalopoda

Phylum Mollusca Class Cephalopoda. Does the Giant Squid get giant headaches?. Cephalopod Characteristics. All mollusks have a muscular foot-cephalopods have adapted their foot to form flexible tentacles with suckers Largest eyes and most complex nervous system (brain) of any invertebrate

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Phylum Mollusca Class Cephalopoda

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  1. Phylum MolluscaClass Cephalopoda Does the Giant Squid get giant headaches?

  2. Cephalopod Characteristics • All mollusks have a muscular foot-cephalopods have adapted their foot to form flexible tentacles with suckers • Largest eyes and most complex nervous system (brain) of any invertebrate • Swim using jet propulsion-organ called a siphon used to squeeze water out

  3. Cephalopod Defense Strategies • Can sense colors around them and change to blend in • Can produce black inky substance that helps them escape predators

  4. Cephalopod Body Systems • Have sensitive eyes-they can see brightness, size and shapes! They have about the same eyesight as sharks. • Use their tentacles to detect smells and chemicals • Closed circulatory system (like ours-network of blood vessels carries blood) • Gills to take in oxygen from water • Beak to “chew” food into smaller pieces

  5. Giant Squid • Maximum size-Females-13 meters (43 feet) long, Males-10 meters (33 feet) long! • Live at depths of 300-1000 meters! • Feed on deep sea fish and other squids • Found in all oceans • Largest eyes in the world-over 30 cm (1 foot)!!

  6. Cephalopod Video • Click here for a video clip of Jet Propulsion • A cuttlefish changing color

  7. Cool Cephalopods

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