Observing Fiddler Crabs More Closely with STC Animal Studies

27th May, 2011 - Posted by Sammie Gann - 46 Comments

Students set up and care for three separate habitats in the STC™ Animal Studies unit: Frogs, Fiddler Crabs, and Millipedes. In Lesson 6, students observe Fiddler Crabs closely. Having observed and recorded some general observations of the crab, students now focus specifically on its body structure and behavioral characteristics related to its survival: when, how, and what it eats; how it gets air and water; and how it protects itself.

Check out the Animal Studies concept storyline


Animal Studies kit


Share your experiences with Animal Studies and Fiddler Crabs below:



May 27th, 2011 at 7:25 pm    

Hi my name is Chika and my favorite part with the fiddler crabs was feeding them and building the habitats.


May 30th, 2011 at 4:21 pm    

animal studies was so fun


June 1st, 2011 at 7:43 am    

Hi its me joi like the other one I like that video to. My favorite part was when we saw peoples drawings.I also saw my friend jayla.


June 1st, 2011 at 8:15 am    

My favorite part was when we fed the crabs and cleaned there water and watched them eat.

Brinley c

June 2nd, 2011 at 8:13 am    

Hi this is Brinley.I liked both vedioes alot.My favorite part was watching how the outher class was observing the animals and looking at the drawings.I think it is cool how the outher class got to be able show what they learned.

From Brinley

Jaden R

June 2nd, 2011 at 8:48 am    

I liked when we were wathing the crabs move.

Jaryn L

June 2nd, 2011 at 8:49 am    

wow i can not believe we had to ever stop animal studies the crabs were my fav!

jasmine h

June 2nd, 2011 at 8:50 am    

studying and feeding the crabs was so fun but the crabs didi not eat alot

william c

June 2nd, 2011 at 8:51 am    

My faviriot part was when we were obseveing the crabs legs mouth & body

Devin R

June 2nd, 2011 at 8:52 am    

My favorite part was when I got to observe the crabs!

russell r

June 2nd, 2011 at 8:53 am    

I love animale studies. my favorite part is making the habitat and waching them interact

Dylan D

June 2nd, 2011 at 8:55 am    

SUPA EPIC VIDEO.My favorite part was just interacting with the craps.It was so fun.Did you know that the crap can blow BUBBLES!!!!!!!!!!!!!!!!!!!!

sophie c

June 2nd, 2011 at 8:55 am    

this was sssooo fun i want to study alot more with animal studies

Chris W

June 2nd, 2011 at 8:56 am    

I enjoyed once the boy grabed the spoon and Jaran put it above the water bowl and it fell in.

Tyler W

June 2nd, 2011 at 8:59 am    

the best part was when we used the magnifiying glasses and saw what they did.


June 2nd, 2011 at 8:59 am    

my favrite part of animal studies was when we made there habitats!it’s a once in a life time oprotunite to have crabs in your class room!i learned a ton about crabs like how to tell boys & gils apart boys have one small claw & one big claw girls have two small claws!science rocks!!!!!!!!!!!!!!!!


June 2nd, 2011 at 9:00 am    

what i liked was bilding the habitats


June 2nd, 2011 at 9:01 am    

i leared that the crabs have eyes that looks like antennaes.


June 2nd, 2011 at 9:03 am    

I learned that the fittler crabs get really scared of us and they have to have salt water because those little crabs live at the beach and the beach dosn`t have regalur water it is salt water.I loved when we had to build the habitat for the crabs becase ther habitat was probly had the most stuff beside the millipeade habitat.


June 2nd, 2011 at 10:52 am    

like are teacher said this was a one time opportunity to obzerve how all the animals are difrent from others but the one thing they had in commen was they all needed food water shelter.


June 2nd, 2011 at 10:54 am    

i loved the crabs it was relly fun observing the fidler crabs was kind of scarey and creepy

Chance K

June 2nd, 2011 at 10:55 am    

I liked the part when we got to talk about the crabs it was so fun!!!!!!!!!!

Salvador G

June 2nd, 2011 at 10:55 am    

The best Part Was Feeding The Crabs

Darius C

June 2nd, 2011 at 10:55 am    

I like it how they move side to side.They are really amazing and fun.I like it when we got to see them close. I liked it very much!!!!!!!!!

henry s

June 2nd, 2011 at 10:56 am    

i love the part when they fed the crabs

Carrie M

June 2nd, 2011 at 10:58 am    

The crabs were scared of us and they move faster than the frogs or millipedes!

christian p

June 2nd, 2011 at 10:58 am    

wow the fiddler crabs looked awesome i liked when they got to talk about want they did and i learned that its cool to observe stuff even if you dont like it


June 2nd, 2011 at 10:59 am    

Observing the crabs was a fun.

Camryn L

June 2nd, 2011 at 10:59 am    

i learned that the crab with the big claw is the boy and the one with the small claw is the girl.my fav part was to put them in a contaner and look at them.


June 2nd, 2011 at 11:02 am    

I learened that crabs use one claw to eat and one to protect it’s self.I liked when we put them in the small cup and we made there habitats.I love science cause we do stuff that we don’t get to do everyday.

LeDajia H

June 2nd, 2011 at 11:03 am    

The crabs looked awesome!Our girl’s shell looked like hers had a face on it!LOL!They run really fast like VROOOOMMM!LOL!:)


June 2nd, 2011 at 11:07 am    

Fiddler crabs have 10 legs not 8 leg


June 2nd, 2011 at 2:01 pm    

I liked when we had to build the habitas.My favorite part of the crabs was that we just couldn’t put food on the land but also in the water.We put it in the water because they like water and maybe got hungry when they swam in the water.

Christian s.

June 2nd, 2011 at 2:02 pm    

my favorit part was when we fed them.

Rana r

June 2nd, 2011 at 2:03 pm    

the crabs were scary to me :o

jalon a

June 2nd, 2011 at 2:04 pm    

it was fun what we did with the crabs we odseved them and saw them do all this amazing stuff


June 2nd, 2011 at 2:04 pm    

The way the crabs move was funny.It was fun feeding the crabs I wish they where still here it was fun

Eli M

June 2nd, 2011 at 2:05 pm    

I love the crabs! They where awesome. I love to pick them up! They did a awesome job!!!!!

victoria h

June 2nd, 2011 at 2:07 pm    

i really love the fiddiler crab because i have never seen a fiddiler crab they r so cool i liked when we got to draw the fiddiler crab observe the fiddiler it was so fun


June 2nd, 2011 at 2:08 pm    

it’s cool seeing the kids work with the anamils.

Patrick S

June 2nd, 2011 at 2:08 pm    

Hi my name is Patrick and I loved the part when we was feeding crabs.I had so much fun doing this unit becouse we love working with animals in our classroom.The lesson I liked the most was feeding the crabs.

Joi A

June 2nd, 2011 at 2:11 pm    

Hi this is Joi and I thought this lesson was great. I remember when we study the fiddle crabs.They were a little energetic.But still fun. When study them our student teacher Ms.S drop the crab.It was so funny.My favorite part on the video was when you saw them walk side ways.

Zack A

June 2nd, 2011 at 2:11 pm    

That was amazing.My favorite part was observing the crabs in the big tank.The thing i liked about the crabs were 3 things watching them eat and looking at the pinchers and trying to figure out why they are the same crab but have different claws,and why the male crab a 2 different size claws.why do they have 2 different size claws.

Kristen F

June 2nd, 2011 at 2:13 pm    

The crab video was cool!My favorite part of the unit was making the habitat for our creatures from other parts of the world.I also liked watching them in the cups and drawing them and watching them hide.That was cool to see there behavior and actions to humans.Another thing i liked about working with the crabs was feeding them and drawing them.I had fun and also had a great time watching the video and seeing my friends i had a great time!:)

Mohamed E

June 2nd, 2011 at 2:15 pm    

I liked when we put them in the cup’s and i leaned that if the big claw is on the right side that means it is right handed and if it breaks of it will turn into the small claw and the small claw turns into the big claw


June 2nd, 2011 at 6:30 pm    

I liked all of them but mostly the crabs.

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