CRUSTACEANS

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CRUSTACEANS

• Arthropods in the water!

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All Arthropods have

• 1. Exoskeleton
• 2. Jointed Legs

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EXAMPLES OF CRUSTACEANS

• Lobsters
• Shrimp
• Crabs
• Barnacles

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CRUSTACEAN INFO

• Crustaceans have an external skeleton or
  exoskeleton.
• Crustaceans have 4 body parts eyes, antennas,
  mouthparts, and swimmerets.
• All crustaceans have 4 antennas (large and
  small).
• Like all arthropods, they have jointed legs.

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CRUSTACEAN CHARACTERISTCS

• Crustaceans have a fan-shaped tail.
• They do NOT have a heart.
• Crustaceans have compound eyes, which mean their
  2 eyes are made up of many simple eyes.

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Crustacean Numbers

• Crustaceans first appeared 600 million years ago.
• Fossils of over 2,000 species have been found.
• Crustaceans come in different sizes and shapes
  that vary from a few inches to 10 feet.

• There are currently more than 800 families of
  crustaceans and well over 40,000 species.
• Some species live on land, about 99 spend their
  lives in all types of water habitats, such as
  seas, lakes, and rivers.

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LOBSTERS
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COOL LOBSTER FACTS

• Lobsters are cold blooded their body temp
  depends on the temp of the water.
• Most Lobsters are nocturnal.
• The biggest lobster caught weighed over 44
  pounds.
• Lobsters may live to be 100 years old.

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ANOTHER LOBSTER FACT

• Lobsters have a most unusual way of swimming. The
  tip of the tail can be spread out to form a
  paddle. The lobster can flick its tail under its
  body with such force that it shoots backward
  through the water.

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CRABS
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INFO ON CRABS

• Crabs have many senses that help them to find
  food and stay out of the way of enemies.
• Would you believe that a crab has 3 different
  sets of jaws? They help to chomp and crush the
  crabs food into tiny pieces that are easy to
  digest.

• All crabs have two pairs of antennae on their
  heads. The long pair help the crab to feel its
  way around the dark. The short antennae allow the
  crab to smell and taste the water.
• There are about 4,500 different kinds of crabs.

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Eeeeew!!!! WEIRD!!!!

• Decorator crabs are experts at camouflage. They
  cover their shell with rocks, seaweed, sponges,
  and other sea life.

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SHRIMP
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WANT SOME SHRIMP?

• There are over 2,000 different species of shrimp
  worldwide. Shrimp range from a small fraction of
  an inch to 9 inches long. Shrimp are eaten by
  many animals, including many fish, birds, octopi,
  squid, cuttlefish, and people

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MORE SHRIMP INFO

• Female shrimp lay over 1,000 eggs, which are
  attached to her swimming legs. The shrimp emerge
  as tiny floating organisms. After growing, they
  sink to the bottom, where they will live. As a
  shrimp grows, it often molts (losing its old
  shell and growing a new one.)

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Some Shrimp live on anemones and keep them clean
in return for protection.
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Tadpole Shrimp-
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BARNACLES
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Barnacles are crustaceans that dont go anywhere.
They stick to rocks and other solid objects and
stick out their legs to catch food floating by.
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BARNACLES ?????

• Barnacles are usually found in warm waters. You
  can find them attached to ship bottoms, wharf
  piles, rocks, whales, large fish and shellfish.
  Since they are attached to rocks, they are
  dependent on the tides to bring food to them.

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THATS ALL FOLKS!! By Nichol Blatnik, Julie
Hunt and Marta Howard Degan Elementary
BYE BYE!