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Four Blue Crab Facts with the Sea Squirt Campers

6/20/2016

1 Comment

 
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It's the first day of summer, and the first day of the Sea Squirts day camp where kids ages 5-8 participate in games, crafts, activities and field trips based on a different theme each day. Today's theme was invertebrates -- or animals without a spine. What better way to learn about this group of animals than by going to Wallops Island to capture the Eastern Shore's favorite invertebrate, the blue crab?

Blue crabs are fascinating animals with tons of cool adaptations. Here are four things the Sea Squirts learned about blue crabs today. 

1. Male and female crabs have different markings on their abdomens.

Male blue crabs are a tasty snack for many humans, so knowing how to tell the difference between a male and female crab is a handy trick. Male crabs, or "Jimmies," have a Washington Monument shape on their underside, while Female crabs, or "she-crabs," have a capitol building shape instead. For every crab the Sea Squirts caught, they checked the abdomens to tell which was which.
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​2. Blue crabs can swim through the water.

Although they prefer to live on the seabed, blue crabs are one of the few types of crabs that can swim. Their back legs -- which look like flippers -- are called swimmerets, and they let the crabs move through the water with ease. Sea Squirts looked on as the camp counselors held the crabs by the joints on their swimmerets to avoid a pinch from the crabs' nasty claws. However, you can also hold a blue crab by its claws as well. Just be careful because…
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​3. Blue crabs can lose their claws.

Humans aren't the only animal that enjoys feasting on a blue crab. Many types of predators find them tasty. One adaptation blue crabs have is being able to lose their claws in a pinch so that they can swim away from whatever is trying to eat them. One of the Sea Squirts actually caught a crab that had lost its claw. Believe it or not, these claws can grow back! And it happens because…
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4. Blue crabs molt.

Crabs have hard exoskeletons. As the crabs grow bigger, they have to shed their exoskeleton about once a month so that they can continue to fit inside it. This process is called molting. When this happens, the crab slowly regrows its missing limbs. The Sea Squirts found a "dirty" blue crab, which had algae growing on its exoskeleton. This means that it had been a while since it had molted, and it probably would do so soon!
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​For more information about the Sea Squirts day camp or any of CBFS's other camps, you can visit the camp page of our website. Keep a lookout on our Flickr or Instagram for new photos of camps throughout the summer!
1 Comment
Maria link
4/24/2019 07:43:48 pm

What a fun group of people ;)

Reply



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  • HOME
  • University & Research
    • SUMMER COURSES >
      • REGISTRATION & FEES
      • STUDENT LIFE
    • FIELD TRIPS >
      • FACILITIES
      • ACTIVITIES & SITES
      • FIELD TRIP FEES
    • RESEARCH >
      • STUDENT RESEARCH
      • FACULTY & INDEPENDENT RESEARCH
    • Spring Break Summer Sampler
  • CAMPS
    • FAMILY CAMPS
    • YOUTH CAMPS >
      • DAY CAMPS
      • OVERNIGHT CAMPS
      • CAMP ACTIVITIES
      • FAQ
  • ROAD SCHOLAR
    • Bicycling the Eastern Shore of Virginia
    • Birding Virginia's Eastern Shore
    • Discover the Islands of Virginia's Eastern Shore
    • Kayaking the Eastern Shore
    • Share a Marine Science Adventure with your Grandchild
  • OTHER PROGRAMS
    • SCHOOL PROGRAMS >
      • GENERAL INFO
      • CLASSES
      • FAQ
      • FUNDING OPPORTUNITIES
    • FRIDAY ADVENTURE SERIES >
      • FRIDAY ADVENTURE SERIES OCEAN ADVENTURE
      • FRIDAY ADVENTURE SERIES KAYAKING
      • MARSH MYSTERIES CLASS
      • INTERTIDAL EXPLORERS
    • HOMESCHOOL
    • CUSTOM PROGRAMS
    • SCOUTS
    • OUTREACH
    • TEACHER WORKSHOPS
  • PROGRAM GUIDE
  • ABOUT US
    • STAFF/CONTACT US
    • RENTALS
    • EMPLOYMENT
    • INTERNSHIPS
    • BLOG
    • MEMBER UNIVERSITIES
    • CAMPUS
    • DONATE NOW >
      • WAYS TO SUPPORT US