Aquarium Field Trip

https://www.google.ca/url?sa=i&rct=j&q=sea+urchin&source=images&cd=&docid=S0DKPA3oUnnf7M&tbnid=sLUlUuXhOkdLQM:&ved=0CAUQjRw&url=http%3A%2F%2Fpersephonemagazine.com%2F2011%2F12%2Fhappy-horny-holidays%2Furchin%2F&ei=mBzYUuv9AoXkoATRpoHYDw&psig=AFQjCNFO8Y9yxdkoh-_e1TXrBcDfZ-FAZA&ust=1389981200373003

This is a sea urchin, one of the animals we learned about when we went to the aquarium. The aquarium was filled with valuable learning experiences, anything from anemones being homes to fish, but poisoned to humans, right to penguins and anything in between. I chose the sea urchin because they are very interesting. They are in the phylum echinoderm. They are very interesting because the mouth is at the bottom and they can be eaten when the hard and spiny shell is cracked open. Very interesting animals, and that is why I chose the sea urchins.

http://en.wikipedia.org/wiki/Tarantula Tarantulas are arthropods. Arthropods have a 3 segmented body, including a head, thorax and abdomen. However some of them have a cephalothorax and an abdomen, only having 2 body regions. (Head and thorax are the same region in these ones)
I chose this one because I've always been interested in tarantulas. Most people are afraid of them, but I think they're very interesting.