Mollusks are soft-bodied animals

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Mollusks are soft-bodied animals with a hard
protective covering.
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There are many types of mollusks, including
clams, oysters, snails, squid and
octopi. There are many Mollusks that we eat!
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• The Mollusk Phylum has three
• Main classes
• Gastropods (ex. - snails)
• 2. Bivalves (ex. - clams)
• 3. Cephalopods (ex. - squid)

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Mollusks have a mantle, which is protective
tissue Covering its body. They breathe using
gills, and they Move using a muscular foot.
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One advancement that mollusks have is an open
circulatory system. The blood is not always
inside of veins.
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Gastropods(snails) have adapted to life on
land. This is a big step! Most gastropods are
covered with a protective shell. Many have
eyes.
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Gastropods use a radula, a rough tongue, to eat
by scraping off food.
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The next class of mollusks is bivalves, which
includes clams and oysters
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Bivalves are covered by a hard protective Hinged
shell, like this giant clam below.
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The last class of mollusks is cephalopods, Which
includes octopi and squid. Cephalopod means
head-foot. Can you see why it has this name?
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• Cephalopods have many advancements
• Closed circulatory system (blood always
• within heart or veins)
• 2. A foot divided in to tentacles
• 3. A well-developed nervous system with eyes

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Fact or fiction?
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Here is a photo of a real giant squid.
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The squid in the previous picture measured 50
feet long and weighed 5000 lbs.! Its eyes would
be almost the size of a soccer ball. And heres
an interesting fact.in the water, Giant squid
are Horace Mann maroon in color. Perhaps we
should reconsider our mascot?